Almost the same gimmick as the other, with a few oddballs in there too:
Title: Quite the talented insects, aren't we?
Paul McCartney - Member of the Beatles
Paul Insect - A street artist
As I stab through your armor, I throw balls.
(MOehm) Paul Pierce - basketball player
As a foot traveler, you can watch me drive cars.
Paul Walker - actor in fast and furious
As a silver fish, I transform into an ant.
Paul Rudd - Ant-man actor
As an early teacher, I am not actually one of what I'm named.
Paul the Apostle - He was an early teacher and @lplant pointed out he isn't actually one of the 12 apostles.
As a reborn person, I have quite the cool hand.
Paul Newman - Actor of 'Cool hand luke'
As an alien, my voice isn't actually an alien.
Paul - the film about an alien who has a voiceover that isn't alien.
As myself alone, I'm humble and small.
Paul - the name means small or humble (thanks @lplant)