Satanick

The MOST UNSTABLE speech style. It matches him being mentally unstable.... Normally speaks casually and rough with Envi and other subordinates, Artamos, Fumus, and frequently with Ivlis in the early days (before he noticed he loved him).

Uses a lot of ~desho and ~daro  (“aint that right!! Agree with me!!!”-kind-of nuance). He uses a lot of MAJI?! (seriously?!) which makes him sound a little... dumber than his physical appearance would make you think, lol. He has the highest meme concentration (I can’t even start with all of them tbh).

SUPER FORMAL with Siralos. Crazy ultra formal. BUT he refers to Siralos as “Siralos-tan.” This is like saying “Siralos-chan” but cutesier. Siralos-babygurl. It’s definitely something you’d say for an adorable girl, which is probably Siralos’s preference? Probably.

Formal and polite with Reficul and Sin, Eti and Kcalb, if you ignore the content then he would be a fine gentleman. In some of the earliest comics with Refi and Satanick this isn’t the case though, DSP adjusted his character with time.

To Licorice he consistently uses gross babytalk (he talks shumthwing like thwis), and after he notices he loves Ivlis he has a SUPER CLINGY OVERLY-AFFECTIONATE CLOYING STICKILY-SWEET speech style when addressing him.

Normally he uses “ore-sama” to refer to himself (”hell yea I’m awesome”-type nuance), but if he’s bottoming/the sub he switches to boku. To be fair, using “ore-sama” then would kill the mood anyways.

Sin

She doesn’t talk with too many characters--she talks the most in Sunahama Tsuushin(Seashore Dispatches, Sandhill Communications, no official translation). She is very polite and respectful toward Reficul, she speaks to her as though she is her superior. Many of Reficul’s underlings and Mors call Reficul “Maousama/Devil-Lord-sama which is a respectful title, but Sin is the only one (that I know of) who calls her “Reficul-sama” which is the cutest thing!!!!!!!!!! Ever!!!!!!! I get “adoring wife of a warlord/general” type vibes

Lzet

He uses like, business casual language. He’s the sloppy guy at a white-collar workplace, technically formal, but kinda loose? Speaks formal-ish to Mors and Reficul which is sloppy, but if he were to use this same style of speech with someone lower-ranking than him or a friend, it would make him seem a bit shy (like a person who has trouble using entirely casual speech--not uncommon--but I haven’t seen him talk with anyone else yet so idk). He calls Reficul “Maou-sama” (formal title).

Ivlis

When he was young/serving Siralos, as well as when directly addressing/thinking about Siralos-sama himself: SUPER FORMAL. Good kid. Obedient, dutiful, and proper. A few tiny rough spots of speech. (there are some drawings where Ivlis sits seiza-style (formal, uncomfortable posture lol) I think this is reflective of his upbringing. Gray Garden appearance: who is this punk? lol ( ´∀｀ )♡ Consistently uses “ore” (rough-ish) I’ll add a bit more later but there’s not much to him, Satanick is the one with the ridiculously complex style

Licorice

He speaks differently depending on his size. When he is big he calls Ivlis “kaa-san” (still respectful, buuut without the honorific “o” at the start. When he speaks ABOUT his father he will say “tou-san” rather than “otou-san.” However, when speaking directly to Satanick he calls him “dumbass horse shit.”

Baby Licorice just said “ma” and “ba” (short for dumbass/horse shit).

Child Licorice calls Ivlis “mama” and uses kinda shy, sweet kid-talk.As an adult, he talks in a kind of rushed, intense manner to Ivlis and overuses the word “mother” (almost once per sentence, it’s amazing lmao). “Mother you look sad today, whats the matter, Mother you’re wonderful, hey, I won’t let Satanick hurt you Mother--”

Also, he avoids addressing Satanick altogether most of the time. Heavy insults+judgemental attitude lol.

Uses “boku”

Emalf

Uses that semi-casual type of formal speech... (If you’ve seen Shirobako, maybe Takanashi is a good example of how it sounds?) It makes him never seem serious, lacking in discretion, and lacking in brains. It matches him!!!!

“Yeah, I like, totally wanted Yosafire to be my girlfriend so I’m kinda bummed out.” ←something like that (approximation)

He calls Ivlis “Ivlis-san.” In one sense, yeah, it’s better than using no honorific. In another sense, it’s weirdly.... not as respectful as one would expect? He talks like Ivlis is like manager at his workplace, not a Devil Lord lol. All the other subordinates for other devils are more respectful...also yeah, nobody takes Ivlis seriously anyways ((´∀｀*))

Poemi-SAN. She is higher on the social pecking order, despite being younger.

Poemi

Poemi calls Emalf just straight up “Emalf” with no honorifics... the social pecking order lol. . She also has that typical kid-thing where if she doesn’t know a word she’s talking about, it will all by in hiragana, no kanji. She’s childlike, but she has her shit together (unlike Emalf.)

Met

Casual and sloppy

Kuro-tsun - overly buddy-buddy,

Calls Hanten “Nee-san.” Met’s a punk but this sounds full of admiration and kinda flirty. Probably cause it’s Met saying it.

Hanten

Not so sloppy, but casual

“Kurotsuno” no honorific, they feel like they go way back and probably not in the best of senses

Artamos

Grandpa voice (it’s so cute)

Kurotsuno

Very ladylike way of speaking. Not elegant and refined in the same way that Nagi’s speech is, but ladylike.

says “Shikabone-kun” ←cute!!!! It could be his mascot-character like appearance, he does act a bit young but he doesn’t act like she’s much older than him if at all lol.

Shikabone

“Kurotsuno-chan”

Yosafire

Uses “atashi” which is very cute and feminine.

Idate

He’s a “watashi” character and it is so crazy good I love it... He’s a well-mannered killer whale. He uses informal speech, but it’s still gentlemanly. The things he does are so NOT gentlemanly. I screwed up and wrote him saying “ore” in a comic though cause my brain pairs that word with his shitty behavior lol, but he always uses “watashi”!! The contrast is VERY good...

Samekichi You probably know, he has a gruff way of talking! I can imagine N*buhiko Ok*moto would be an amazing voice actor for him (Bakugo/Accelerator/Ghiaccho). He uses “ore” and refers to Wadanohara by name from even their early days (close relationship! Not necessarily romantic, but later of course it will be)

Wadanohara

Sal/Syake