Crossword puzzle clue "cartoon cat with an exclamation mark in his name"

Cartoon cat with an exclamation mark in his name

He made his mark by not making his mark

Cartoon cat, in his own voice, and a hint to this puzzle's theme

Cartoon boy who gets his own fictional TV show, "Spaceboy Zoom and His Dog, Astro"

"Jeopardy!" host who dropped his first name of George to go by his middle name's nickname: 2 wds.

Sitcom star (he played an innkeeper) who dropped his first name of George to go by his middle name's nickname: 2 wds.

"Horrible Bosses 2" star who goes by his middle name, not his first name, Daniel: 2 wds.

Incoming Baseball Hall of Famer who dropped his first name of George to go by his middle name's nickname: 3 wds.