Doom Slayer
The Doom Slayer has incredible strength and accuracy after years of fighting demons. He would make a great thrower while there are a large number of enemies, so he has lots of options to attack.
Master Chief
Master Chief has been through years of intense combat training. He would be my interceptor, catching the balls that the other team are throwing.
Morgan Yu
Morgan Yu is highly experienced with Mimics, so his perception and sense of awareness is off the charts. He would be excellent at keeping track of all incoming threats.
Samus Aran
Samus Aran has been on many missions to hostile alien planets, and is excellent under pressure. She can also become a Morph Ball, which could be useful.
Kratos
Kratos has years of experience with throwing weapons due to his primary weapon, the Leviathan Axe. He would be my striker, attacking enemies at a distance.
