So I read 30 of the mangas in 24 hours this weekend because I actually had free time for once, and I have Updates.
I think Anzu is an ENTJ or ENFP. She's much more straightforward and direct than Yugi, and she doesn't put up with any bullshit- when a guy touches her butt at work, she slaps him, and she sends Jonouchi and Honda packing when Yugi's too scared of them in the first manga of the originals. I'd say ENTJ but she seems fairly dreamy- like when she willingly endangers herself by putting herself on the bomb car in the hopes that "other Yugi" will come save her. That was just stupid. And she seems more relegated to the cheering section later on, which I know I wouldn't be okay with.
Jonouchi is such an ESFP. He's silly and loud and out there, but he also has very strong values, like standing up for his friends, and he has no Ti that I can see.
Honda: I want to say Honda is an xSTP. I'm inclined to believe he's introverted, because he seems to spend a lot of time by himself and be alright with that. But I think he also has a fair amount of Fe. He's also fairly accommodating of others, like when he takes his nephew (even though his nephew's a pain in the ass) and gives himself up for his friends without saying anything with the falling blocks. That might be Fi-Te, but his performance in Death T-1- realizing the guns were rigged, then coming up with a plan to win anyway- is pure Se and Ti, in whatever order. But he doesn't have Jonouchi's "let's just get straight to it and storm over the top of the game!", which is likely underdeveloped Te.
Bakura: ISFJ? He's difficult to type, but he's definitely an IxFx. He's very quiet, but I think the emotional explosions are more likely Fe than Fi. He emotes outward instead of keeping it inside.
Evil Bakura: ExFP? He's revenge-driven and I usually don't try to type sociopaths (or whatever he is). Maybe ExTJ actually.
Kaiba: xNTJ. I think ENTJ. He's very action-driven and gets things done, but also talks a
lot.
Mokuba: ENFP? He's little, so it's hard to tell.
Yugi's Grandpa: Ooh. Uh. This one's hard. I can't tell, his character goes from comedic foil in the originals to actual character, but we don't see that much of him. ISTJ maybe?
Marik: ENxJ. Maybe ENFJ? He definitely has charisma, but I know ENTJs have that as well. Motorcycle = Se user, Te-Fi = keep your anger in check. Holding a grudge is something unhealthy ENTJs do, and do very well. But I can't tell.
Evil Marik: Nope.
Ishizu: INFx. The "I know all" vibe and the "I planned this" vibe says INFJ to me, but I could buy INFP. She's very determined.
I stand by Atem: ENTJ and Yugi: INFP. Pegasus is definitely an ENTP. He's a troll and he has eclectic interests, and he doesn't appear to take anything serious but secretly does have an emotional side.
Yugi: INFP. So much Fi, jeez louise. And he's so trusting too- reminds me of my sister when she was younger.
Atem: ENTJ, I think. He definitely has the dramatic edge and sense of timing of an Se user, and the Fi of Yugi. I think it also makes sense because he has a line in the comics about having learned a lot from Yugi- which would make sense, since ENTJs have a lot to learn from INFPs (my sister's an INFP- she's single-handedly responsible for teaching me not to be a Te-dom dick all over the place all the time).
Jonouchi: ESxP
Kaiba: xNTJ, 8w7. He's mildly terrifying in the comic books.
Honda: ESFJ
Pegasus: ENxP, definitely. He's such a troll.