-----deltarune chapters 1-4 analysis below; no chapter 5 spoilers or theories-----
a couple years ago, pre-chapters 3 and 4, i wrote this analysis of the bosses and secret bosses of deltarune.
while the theory crafting was mostly wrong (this is what happens when you try to find a pattern with only two cases), i do stand by most of my analysis about the nature of the boss and secret boss of the chapter, and want to continue that train of thought to present my analysis of the bosses and secret bosses of chapters 3 and 4. why? because tonight is my last chance to put this out, and if i don't do it now i will inevitably be proven wrong and never end up talking about it.
to briefly summarize the main points from my previous post on the topic: bosses and secret bosses are thematic mirrors. the main boss is themed as the main representative of the dark world - the king of a deck of cards and the motherboard of a computer. the secret boss is an unimportant, yet not too unimportant component of the theme, with some level of power over the the thing behind the main boss - a joker in a deck of cards and a spam email. in chapter 1, the main and secret boss are cleanly separated. king is the antagonist you spend the chapter aware that you will eventually fight, and does serve as your final opponent no matter what. jevil's existence itself is a secret, and you will not know anything about him unless you are both observant and thoroughly searching the game for secrets. in chapter 2, queen is the main boss who you spend the chapter preparing to fight, but spamton's existence is not a secret at all. you have a mini fight with him no matter how you play the game. only his boss fight is a secret. interestingly, if you play the game in a specific manner, spamton, the secret boss, entirely replaces queen as the main boss of the chapter. they are not nearly as cleanly separated into main and secret as king and jevil are.
there is a pattern to the boss and secret boss of the chapter - how they are themed, how you interact with them, their presence in the story. the fandom typically assigns the main and secret roles based off who gives you a shadow crystal, but i disagree with that analysis. i think the thematic significance of the characters in question is actually more important to the role assignment, and im going to now elaborate on how and why in chapters 3 and 4.
chapter 3 immediately broke my assumption that there would be a linear progression of boss/secret boss dynamics throughout the chapters by (arguably) introducing three bosses: tenna, eram, and the knight. thematically, tenna is the clear main boss of the chapter: he spends the chapter blocking and distracting you from your goal, has his minions fight you multiple times, and has a big final fight with you at the end of the chapter. he is a television in a dark world all about television... is it really all about television, though? chapter 3's dark world is opened in a living room. there's a lot of argument to be made about whether or not a television is the most significant aspect of a living room - why isn't it chariel, for example? why is the couch barely sentient? is it just because the living room in question is arranged such that the focal point of it is the tv?
i think chapter 3's dark world is actually not meant to television themed, it is more so living room themed - tenna has simply transformed the landscape of it to his liking, placing himself as the centerpiece, because that's how he wants to be seen. when i say "living room themed" i mean that its true theming is the essence of what a living room represents to a family. it is meant to be a hearth, a place of warmth and entertainment and shared experience, but after the family occupying it has fallen apart, what remains is cold, snow, and entertainment devoid of what gave it color. tenna has desperately tried to recover it, make it something fun again, but you can see the cracks in his effort.
im getting off topic, though. tenna is the clear, thematically appropriate main boss. the secret boss isn't quite so obvious, because chapter three presents two candidates for the secret boss: eram and the roaring knight. i have an argument for both of them being the "real" secret boss, and i do slightly lean on the side of the knight, but i want to present both sides here.
eram, to me, is a representation of a video game easter egg that you have to dig deep into a game's secrets to find. that in itself immediately does align thematically with the television being the main boss - overt and covert aspects of entertainment. eram's presence in the story is most like jevil's in chapter 1: you won't find them without doing specific things and unlocking special paths. it is interesting that the actions needed to find eram are morally bankrupt, unlike what you had to do to find jevil, or even spamton - those were just tasks. that said, they're only theoretically morally bankrupt - no ill is actually coming to anyone by doing them, except perhaps kris's sanity. eram could, in a way, mirror tenna's deep nostalgia for a happy family and genuine love by representing the exact opposite. eram could stand for doing it alone instead of together, for relishing in the lack of community. eram could stand for entertainment gone sour.
then, there's the roaring knight, the more widely accepted secret boss because they hold a shadow crystal. the roaring knight is an interesting case. starting with theming: we don't know exactly who the knight is, but it is very very likely to be one of the people who used to be the happy family tenna is so nostalgic for. depending on who that is, the roaring knight may fit very well into the theme as a secret boss. more interesting to me, though, is their role in the story. in chapter 3, tenna is not your final opponent of the chapter in any run of the game - it is always the roaring knight. in most playthroughs, the knight has an easy victory and just leaves, having larger priorities (it seems) than stopping the fountain from being closed. the knight as a secret boss is like spamton in that their existence is not a secret, but their boss fight is, but they go even beyond spamton because their boss form and the fact that they attack you as a boss is not a secret. they do that regardless of anything. in contrast, spamton's boss form and attack as a boss is a complete secret. the knight never "replaces" tenna as the main boss thematically, but they always are the final opponent of the chapter. calling the knight the secret boss of chapter 3 kind of does seem like the linear progression of boss/secret boss dynamics after chapters 1 and 2, with only exactly how they fall into the theme being a mystery. my bias towards my old instinct that the boss/secret boss dynamic would keep escalating is, naturally, why i am inclined to say that the knight is the true secret boss of chapter 3.
let's talk about chapter 4. chapter 4 took everyone by complete surprise when we found out that the big final enemy of the chapter was a titan. i think it's safe to say that absolutely nobody expected to be seeing a titan at the end of chapter 4, let alone fight one. but let's start with basics: the chapter's theme.
chapter 4 doesn't have 3 bosses, but it does have 3 dark worlds, all in a church. the theme is church/prophecy, which we know now to be the religion of deltarune's world. as soon as we enter the dark world, we have a fruitless fight with the knight, and spend the chapter trying to get to them and... well, it's never entirely clear what the fun gang is hoping to achieve after getting to the knight. freeing undyne and toriel, perhaps? either way, the knight does try to prevent us from getting close as we approach the fountain more and more, but as long as we're far away they do not interfere with our actions. they do not seem bothered at all by us exploring the dark world. there is, however, another character who spends a large part of the chapter blocking us, distracting us, and otherwise wasting our time.
here is my hot take of the day: gerson boom is the main boss of chapter 4.
this has always been so obvious to me that i think it barely even needs an explanation. gerson boom is the author of lord of the hammer, a book based upon the prophecy, that is, the religion of deltarune. he is the father of the pastor who delivers sermons in the church that the dark world is created in. he is a darkner, because he is not actually alive in the light world and is an object animated by the dark (he claims to not know what a darkner is, and he may be lying, but it doesn't change the fact that he is a darkner). he has a "lair" in the dark world, where a variant of his theme plays. all the other darkners and enemies in the dark world somewhat report to him. he spends the chapter being in our way and interrupting our progress. he checks every box required of being a main boss both in theme and in presence in the game, except for the fact that he does not fight you unless you go looking for it. and, of course, that he gives you a shadow crystal.
i fully expected to be fighting gerson boom by the end of the chapter even though he was obviously not antagonistic. that didn't surprise me, because being antagonistic is not a requirement to be a main boss - king, queen, and tenna are a linear track of becoming lesser and lesser antagonistic, so gerson seemed like the natural progression of that. the roaring knight/titan being the real antagonists in the chapter makes sense to me as well. chapter 3 introduces the idea that the main boss is not required to be the main opponent of the fun gang - gerson boom just takes that a step further than tenna did. tenna is a victim of the final enemy of the chapter; gerson boom helps fight it. linear progression. that said, he doesn't do the one thing you expect a main boss to do: fight you. this, in my opinion, is perfectly explained by gerson himself - he doesn't believe in fate. he doesn't believe in doing what he is expected or required to do. gerson boom, as a character, is exactly the type of main boss who will not fight you, and instead use his effort to block and obstruct you to try to teach you something. his good nature does not make him any less of a main boss.
then who's the secret boss? i have two opinions here, like i did for chapter 3.
the first is that chapter 4 is the end of the boss/secret boss dynamic, and in gerson boom they have collapsed into each other - a thematic main boss whose boss fight is a secret. gerson's anti-prophecy and potentially anti-religion perspective could also be a good thematic position for a secret boss in a chapter based in a church. if this is true, i would expect the coming chapters to either not have this boss/secret boss dynamic, or not follow the theming that has been reasonably consistent with it so far.
the second is that the secret boss of chapter 4 is actually the titan. the titan, as the embodiment of darkness, stands opposed to the deltarune religion. it exists to destroy. i am not clear on whether every instance of a titan forming qualifies as the roaring, but regardless, what we see of the prophecy makes me think that the prophecy does not predict a titan forming at this point in the story. ralsei's reaction to the titan strengthens that belief for me. so, i would argue that the titan spawning is an unexpected outcome that needed specific steps to be followed in order to happen - except those steps weren't carried out by us, they were carried out by the roaring knight. weird, but doesn't break my understanding of how secret bosses work. the titan is the unavoidable final opponent of the chapter, and its full boss fight is not a secret, which does progress linearly off the level of secrecy that jevil, spamton, and the knight's boss fights had. it is not a proper linear progression if you consider eram the secret boss of chapter 3, though.
yes, my analysis for secret boss come chapter 4 gets a little murky, but i am still steadfastly convinced that gerson is the main boss. im doing this analysis because deltarune's take on storytelling fascinates me, and i am a sucker for patterns.
well, i guess that's all i have to say here. chapter 5 is waiting.















