Ok so I watched the interview with Stephen Rooney, Astarion's writer, and here are some highlights. (I'm an aspiring writer and current game design student who wants to write for games so I'm sorry if some of these insights aren't as interesting to you as they are to me <3)
He calls Astarion his "horrible little vampire boy"
He loves seeing the fandom around Astarion<3
He did write other characters in the game, but mostly NPCs surrounding Astarion or his storyline, so it mostly revolved around Astarion
Astarion is not as connected to other companions/Origins as, for example, Lae'zel and Shadowheart, or Wyll and Karlach are to each other, but he is still reactive to their stories, even if it's just to stand off to the side and laugh when something terrible happens
He had a clear sense of where Astarion's story would start and end, but it got "muddy in the middle", but those are also moments where the best ideas come from
They write from the general idea that every character has one "good" and one "evil" ending, in order to give the player choice. RIP Ascendant apologists :(
According to Stephen, two of the most important aspects of Astarion's character (to keep consistent when bringing him to Idle Champions, at least) is that he enjoys violence, but is also fun about it
"He has a certain appreciation for violence, I guess? A bit of a murdery streak. [...] He's a vampire, he's all about blood, and he's all about, kind of, those darker sides of humanity. [..] But at the same time, he is ... He is really fun, he's really fun to write, he's really fun to have in your party, and it's very important for me that that is also represented."
"He's gonna stab you, but will have a smile on his face as he does it? I mean, I dunno. That's kind of him in a nutshell."
Larian would not have allowed for Astarion to be a typical brooding Dracula type, and there were scenes that were shot down for not being original enough
The main thing about Astarion was trying to get a "sense of fun." It would be easy to write a character that was very unlikable, and they absolutely did not want to do that
Rooney says Astarion is consistently terrible throughout the game and awful in a whole lot of ways, but he also needed to be charming enough that you could tolerate his presence and wanted him around
Rooney also had a lot of input on Astarion's stats (meaning the 10 Charisma is probalby 100% intentional)
He also had input on how certain lines should be delivered, even though the writers didn't directly work with voice actors
The way Astarion moves and poses is "all Neil"
Apparently, Neil Newbon worked on the character for years and Rooney did not speak to him once, though his voice work did influence how Astarion's lines were written and it became a "feedback loop" (Possible context for "ONLY SLIGHTLY, NEIL")
There were no points where a line delivery drastically changed Astarion's writing; rather it was a constant, slow evolution
However, there was one very spoilery moment where Neil gave such emotion to some "basic" lines that it fundamentally changed the scene (WHAT IS IT OMG)
It's difficult to balance approval, as you don't want to straight up write a monster. Every character needs to have some humanity in them. So if it comes to leaving the party, it needed to be the result of something central to said character. They wanted to be mindful of situations that would cause actual rifts between characters. (I assume this is why most generic disapprovals/approvals are +/- 1 or 2, while character-related ones give +/-5 or more)
However, as they don't write straight up horrible people/monsters, it doesn't come up as often as one might think.
The interviewer makes a point about how characters like Astarion and Lae'zel are good examples of how to play "evil" characters, as they are maybe not the best people but are still eager and willing to stick around the other party members
They worked to make sure the characters would work as a group, no matter the configuration of the group. The characters needed to be on the same path, even if they don't always agree or walk that path the same way.
Stephen Rooney is very proud of the "climactic" scene of Astarion's story. (AS HE SHOULD BE.) He even had to step away from the computer and have an emotional moment. Me too, man.
He's also "extremely pleased" that there's a point where you can punch Astarion in the face. "Actually, that one might be my favorite part" A MAN OF THE PEOPLE!!
Stephen Rooney's tip on what specific thing you should try out with Astarion: When he's trying to get a "sneaky nibble" at night, you should "probably" let him bite you. Way ahead of you there, sir.
No discussion about Astarion's romance unfortunately, but that's that!
