Bowser
Bowser's profiles usually discuss his antagonistic history with Mario, Peach and the Mushroom Kingdom, with his evilness, bad temper and impressive strength and power often being mentioned. In Mario Kart games, he is always among the heaviest players and in other sports games, he is a power player. His speed is highly variable and his acceleration is usually low. Bowser will be a driving force to knock out easy target with a powerful throw.
Spider-Man
Peter Parker has superhuman spider-powers and abilities derived from mutations resulting from the bite of a radioactive spider. Spider-Man has had the ability to cling to walls. His other powers include superhuman strength, speed, agility and balance, and a precognitive sixth sense referred to as his "Spider-Sense," which alerts him to danger. Spider-Man has a healing factor that allows him to recover from injuries sustained during battle. After years of fighting, Parker honed his skill into an equivalent of martial arts that is unique to his powers. Academically brilliant, Parker has expertise in the fields of applied science, chemistry, physics, biology, engineering, mathematics, and mechanics. Spiderman will be able to dodge balls easily, use his superhuman strength, and even calculate angles of balls bouncing.
Aang
As the Avatar of his time, he was the only person capable of using all four bending arts: airbending, waterbending, earthbending, and firebending. He was also one of a select few Avatars and one of the first in many generations to learn the ancient art of energybending. he did display the abilities of lightning redirection and seismic sense, making him the first Avatar known to have learned these abilities. As the Avatar, Aang was able to contact his past lives to seek advice and guidance. Aang was extremely agile and quick even without bending. Aang could use his glider staff with great skill as well, using it as a method of transport and sometimes for attack, defense, or bending. Aang will easily dodge anything thrown at him as well as send obstacles towards opponents.
Fish Out of Water
He isn't very shy around others, and will perform brave stunts without fear. He is then seen in the gym playing dodgeball and tries to protect Chicken Little alongside Abby and Runt from Goosey Loosey. Fish out of water will serve two purposes, one will be to hold the position on the team that is closer to the ground if any balls are tossed lower and the either will be to serve as a shield for the person to be hit, Fish is increibly brave and not afraid to get hit.
Princess Fiona
Fiona is highly trained and skilled in Japanese-style martial arts, making her a capable hand-to-hand combatant despite her size. She is able to defeat an entire group of Merrymen when they try to kill Shrek and knocked out Charming with a headbutt. In her ogre form, she gains the superhuman strength and durability possessed by ogres, complementing her already proficient martial arts skills. She is seen to be strong enough to hurl a mermaid far into the beach waters. She is strong enough to kick Shrek with enough force that he gets thrown away. Her orgre form also granting her superhuman durability. Fiona is incredibly skilled in every area and will have no issue outsmarting opponents, winning the game with strategy.