Real life '"I didn't do it!" boys'

In the “Memory Plays Weird Tricks” department: for some reason I remembered him in a Canadian Mountie uniform. Nope, just a suit and wide brim hat.

Two minor entries for the OP, from 1933’s Our Gang’s
Forgotten Babies

John ‘Uh huh’ Collum, his father was Hal Roach’s casting director. No nepo baby he, John was just used as an extra to fill out the scene, with occasional insertion of his two signature phonemes.

Dickie Hutchins, who says “Remarkable,” to everything. (A realistic depiction of how kids will latch onto a random adult-sounding word. I’m told that at age three my go-to was “Oh how rude!”). Dickie was a one-picture actor with one-word dialogue, brought in with his older brother Weezer. Perhaps for the best, since Weezer’s was another sad story of an abused child actor, made further so by his death in training during WWII. Here’s his grave, which I once visited.

(Forgotten Babies also has the voice of Billy Gilbert, who’s often confused with the above mentioned Frank Nelson)

Moral: Don’t f*** with Johnny Carson

That sounds familiar. Bobby something…