Gale Wind

Gale Wind is a ninja from Sonic's ninja village from 37th graduating class like Hellfire Flame. He and Hellfire Flame joined the Monster Association some time in the past to rule the world since they believe monsters are superior to humans.

Due to the fact that the Monster Association is lacking monster with high speed to deal with S-class hero Flashy Flash, he and Hellfire Flame come to recruit Sonic to help them disposing others heroes while he and Hellfire Flame can take on Flash without interference.

Appearance
Gale is a young and muscular man with long hair. He wears a jack-suit with two gloves from his arms.

His monster form takes the shape of a lizard with twisting eyes.

Personality
Gale is shown to be quite sadistic but playful and polite toward his opponent. He is a strong believer in the superiority of monster over human so he choose to join the Monster Association to rule the world.

Abilities and Powers
Gale Wind comes from the same ninja village as Sonic and is a graduated ninja, so he is immensely strong.

Physical Abilities
Immense Speed and Reflexes: He is shown to have superhuman speed that even surpasses Sonic's.

Shapeshifting: Gale Wind can change into his monster form and revert back to his human form freely. According to himself, he achieved this through ninjutsu training.

Trivia

 * In the webcomic, there is a monster named Gale with a partner named Hellfire who also tries to kill Flashy Flash. Whether or not this is the same character is unknown.