Since this is a pretty big list, I've broke it down into the four games separately-

Note that the formal outfits only appear in the promotional material for Ultimate Summer Camp, they do not appear in the actual game

⚠️ Major spoilers ahead for said game, so be warned-

1. Danganronpa 1

Swimsuits:

• First off... I DID NOT EXPECT TAKA TO WEAR A SPEEDO, LIKE-
HOLY CRAP 😳
• Secondly, I wish Mukuro would get her own sprites, but I can't help but find her swimsuit adorable, so fite me-
• Thirdly, I thought Junko would wear a bikini just like the promotional poster, but in the end she was given a tankini/one-piece(?), probably a reference to her love of despair or something like that 🤷‍♀️

Formal:

• Byakuya looked badass with that coat draping over his shoulders ngl-

2. Danganronpa 2

Swimsuits:

• SONIA IS SOO PRETTY WTH-
• Fun fact: did anyone notice that Chiaki, Akane and Peko wore the same swimsuit from the original game?

Formal:

• Gundham looks good in everything 😔👌✨
• I do not understand why people would hate on Chiaki's dress, while I think she's FREAKING gorgeous-

3. Ultra Despair Girls

Swimsuit:

UDG only had the swimsuit sprites, so yeh-

4. Danganronpa V3

Swimsuit:

KEEBO WEARING A FLOATIE IS PERFECTION DHSGJFHSDHGDHSGS-

Formal:

• Kirumi's dress really gave me Genshin vibes-
• Maki with her hair down??? YES.
• Shuichi gave me Sherlock Holmes vibes-
• I love Tsumugi's dress but the wrap is.... ummm... idk what to say-
• People also complained that some athletic students are not given abs, but imma let that criticism slide and pretend they have- :p

So umm, that's it for the opinions! Even the characters that I'm not fans of gets the best swimsuit and formal outfits pff-