Judge Domstol is a minor character who only appeared in the episode Vreedle, Vreedle, when Ben Tennyson and Kevin Levin had to go to court to determine who would be the legal guardian of Ship. He has a Highbreed officer, with red, yellow, and blue patterns, who works as his bailiff. His office is on planet Coda Coda.
Due to some past events, when Ben and Kevin came, he didn't recognize Kevin, because of his mutated form, but later identifies him, and remembered him that if he saw Kevin again, he would send him back into the Null Void. But Ben goes to Kevin's rescue, and showed "Dom" (Ben's nickname for Judge Domstol, or "Judgy") the Omnitrix up close, but transforms into Humungousaur, and broke the table by accident, just by leaning on it but "Dom" forgives him. He says that somebody as important as Ben 10 should not have to waste his time with such trivial matters.