Bowser

Bowser is an antagonist in the Mario franchise who appeared a lot throughout Chapter 1.

Chapter 1 Part 7
He made his own Fandom account called KoopaKing1985, but Patrick Star banned him for no reason.

When everyone thought they were safe, Bowser came in and flamed everyone. Mario, who tried to defeat him, told them to hide in a pipe. King Dedede and Sheldon Plankton defeated Bowser and destroyed the pipe. He exacted his revenge on the two and rammed his Koopa Clown Car into Yoshi, and he spat them out.

Bowser shot Bullet Bills at Dedede and Plankton, but the king reflected them at him with his hammer and sent Waddle Dees after him. Bowser countered the army with an army of his own, consisting of Goombas and Koopas. He killed the Waddle Dees with King Bob-Omb, and shot Bullet Bills, implying he wanted to fight again.

Trivia

 * Chase McFly is revealed to have a dog with the same name, which creates a lot of confusion.