@And,
Sorry, but you were not specific enough, in your clue...I can think of another cartoon, that this works for...And I think it is the one you want...But Roger Rabbit works also...What cartoons (Roger Rabbit) are hidden in the sentence, the cartoon thief (Christopher Lloyd) is stealing cartoons (he steals other cartoons, and tries to kill them by putting them in acid, or something)
This is the one, I think you want, and are talking about...
What Cartoons (Pop-eye, Bluto, Olive-Oil) are hidden in the sentence, the cartoon thief (Bluto) is stealing cartoons (Olive-Oil)
So the answer is Pop-eye...