Mr. Webb

Mr. Webb is the driving instructor that tried to teach Gwen Tennyson how to drive.

Personality
He seemed to have a low self-esteem.

Ben 10: Ultimate Alien
After The Stalker chased them to Ben's house, he told Gwen that he wanted to ride a taxi, but it wasn't because she was a bad driver. Gwen received her license later, most likely from someone else.