Despite the punning title of this post, this isn’t Walt Disney.
He’s actually the cartoonist who designed Porky Pig. I’ve forgotten his name at the moment, but watched a bio about him on youtube, where a number of these interesting documentaries can be found, if you know where to look for them.
UPDATE: Augh. Okay, I remember. The man in the picture is supposed to be Mel Blanc — the guy who did the VOICE for Porky Pig, hence contributing a great deal to the character.