Given the case that he was a spokesman, he would never go into hand-to-hand combat but it could have been a character that commanded "Boss/Minions" (Like a robot gremlin or the bat gremlin) and that Gizmo will defeat him with a single blow.
Gremlins was stolen from children's author Roald Dahl (Charlie and the Chocolate Factory) who published The Gremlins in 1943 based on the creatures. It was Dahl's first book and was written for Walt Disney Productions, in anticipation of a feature-length animated film that was never made.
Dahl doesn't own Gremlins. Gremlins are an old creature from folklore. There's hundreds/thousands of representations of Gremlins in media. These movies are just the most famous.
