Pick 1: Vi from Arcane
Vi is a great pick for a dodgeball team because she's competitive, enjoys active and fun activities, and she's strong. She grew up in an environment that forced her to learn how to fight and fend for herself, so she has good reflexes and is naturally a fighter. Vi would be my first pick because she's so good at offense and would be a good balance for the team.
Not only is Ichiban a brawler, he's also got a wonderful personality for a team setting. Like Vi, he's got great reflexes and knows offense. However, Ichiban's strength on the team would be his optomist and bright personality. Ichiban would cover the team's motivational speeches and bring up the morale for the games.
Pick 2: Ichiban Kasuga from Like A Dragon: Yakuza
Pick 3: Goku from Dragon Ball Z
I have never in my life seen DBZ before but I know that Goku is the strongest person in that show. I wouldn't necessarily view his strength as a key point to our team. His contribution comes within his reputation and his intimidation factor. Everyone knows Goku is strong. That alone will cause our opponents to shiver in fear from his presence.
Otacon is a tactical pick after we established the brawlers in this team. He's extremely intelligent and would be in charge of our game plan to win. Otacon has a lot of experience in MGS with directing Snake and is a highly intelligent computer/robot whiz. He would be irreplaceable on this team and would be on the backline.
Pick 4: Otacon from Metal Gear Solid
Pick 5: Aventurine from Honkai Star Rail
Aventurine would be our key support in the backline for our dodgeball team. His kit focuses on shields and generating follow-up attacks in order to retaliate on the opponent's team. Like Otacon, Aventurine is also highly intelligent but also very sly. Creating barriers in dodgeball might be illegal, but Aventurine is a key player on my team.