Primarily based on observations from P3 FES, along with gameplay mechanics. Feel free to disregard them for roleplay outside of the DR.
NOTE: Any references to the AU (Theo working with Minato) only apply to the DR.
- In regards to Minako/Hamuko/Female MC, I don't mind headcanoning them as siblings, if both of them are in the same game. Otherwise, I'd go with alternate selves/counterparts.
- While Minato loves to eat, his stomach isn't a bottomless pit, despite popular belief. In a Elizabeth date to Iwatodai Stations in FES, Elizabeth had shown to be able to out-eat Minato. It's assumed that Theo did the same in the AU.
- He have his own quirks and interests. He likes singing (re: Karaoke for Courage), cute little picture stickers (re: Print Club for Charm) and doesn't think it's odd to play Quiz Games to help with his Academics.
- He collects stickers from the Print Club into an album. Minato just find them and their decorations cute.
- Although the game doesn't let you form Social Links with the guys in SEES, it's assumed that Minato do get to know them better, off-screen and in-between the time periods, beside the optional events like the Film Festival and walking Koromaru. His friendship with them is there, just without any mysterious voices going 'I AM THOU, THOU ART I' in his head.
- Knows that Shinjiro's a good cook. He sometimes check the kitchen in case something's cooking, and possibly have a free bite.
- He's totally willing to bro things up with his guy friends. Junpei, Kenji, Kaz, Bebe...and of course, Theo. :|b
- Despite certain rumours due to hanging out with Bebe, Minato's straight. :|
- For the Social Links with girls, he either went on that nonexistent-to-game-canon friendship route or he broke up with them after a while on good terms.
- Despite his popularity, Minato actually prefers one-on-one socialising. He'd make the exceptions for close friends and SEES, but otherwise, he'd be quiet during parties. He'd be kind of a derp at it in groups. (Case in point: Operation Babe Hunt)
- He never really actively flirt with people.
...More to be added.