Thresher is a humanoid-shark being and a member of Team Bandicoot.
When he was a regular human being, he tried to test animal DNA on other animals. However, some shark DNA accidentaly spilled on him and Thresher accidentaly triggered the switch which caused a machine from his lab zap him. Thresher soon woke up and saw his new looks as a creature looking like a Thresher Shark. He still has human hands and feet, but he has a shark head with a dorsal fin and a long tail. He has the ability to breathe on land and water and uses telepathy to summon sea animals (similar to Aqualad).