The Mystery Cartoon Character Game, ongoing-ier.

I thought of one, but there's nothing to indicate he matches the clues.

Oho, I remember this one, from Bill Hanna's biography A Cast of Friends. When Joe Barbera and he first came up with the idea of the friendly rivalry pairing of a housecat and an entrenched mouse, producer Fred Quimby poo-pooed the idea. "Cat and mouse has been done already. There's nowhere left to go with it. Cat-and-mouse is dead," Quimby scoffed. Nevertheless, Bill and Joe created "Puss Gets The Boot" in 1940, and it played in theaters. At first, Quimby scolded his chief animators to never countermand his decisions again ... until MGM's biggest distributor came a-callin'. Big Tex asked, point blank and agog with anticipation, "When y'all gonna make another one?" Quimby, rather that eat crow, roared at Bill and Joe: "Well, don't just stand there; make another one!"

This must be the magnificent Thomas Cat, the frenetic foil to the irascible Jerry Mouse. At first, Tom was called Jasper, and is named as such in his first cartoon. The mouse was originally Jinx, until a straw vote of MGM animators christened the pair Tom and Jerry.

I think this is the Tasmanian Devil ("Taz" for short) from the Bugs Bunny short Devil May Hare (1954) and subsequent films.

It was producer Eddie Seltzer (Schlesinger's successor) who hated him ("too obnoxious!") and told director Bob McKimson not to use him again, and studio boss Jack Warner who asked why the character that had generated so much fan mail hadn't re-appeared since.

This is indeed the Tasmanian Devil, AKA Taz. Yeah, Tasmanian devils do indeed exist, although they sadly do not spin around over 90 MPH, going through rocks and trees, and do not eat practically everything.
Basically, the biggest real life disappointment since the roadrunner--which is not man-sized, colorful, run extremely fast, nor even utters "Beep Beep!"

Just time for three quick clues before I go to bed!

1) In the first books I was white.
2) In my first animated appearance I was brown.
3) In the feature-length cartoon I was blue.

If these aren't enough I'll post more tomorrow...

I thought I had the answer, but I don't, as the colors of the character I looked up weren't even mentioned.

OK, more clues...

4) I carry the two principal characters on their quest.
5) My legs are not what they were.
6) In the feature I sing of my sadness.

I've got it, but will only post if no one else does.

Trouble is, I still don't know.

OK, last 3 clues...

7) I remain blue in the TV series.
8) In the books I am not unhappy - I am a bit more goofy and clownish.
9) Which makes my voice in my first film (a two-reeler short) particularly appropriate.

Sorry, Pete, but both of the characters I thought of are totally wrong. Hopefully, someone else knows the right one.

I do know the right one, I'm not letting this one go unguessed. This is the camel with wrinkled knees of Raggedy Anne and Andy.
I do happen to be rather busy though, so someone else should take my turn.

I'll take it, then. Here's another that's gone untapped for reasons I can't understand:

1. I'm an evident caricature of an iconic live action human character--as are my wife and friends.

2. My shorts precede a series about a modern stone age family.

3. My cartoons are also easy to mistake for a similar one from my studio-except that that one has a slight difference.

Just three final clues, and no more:

4. My debut short was released sixty years ago.

5. In one of these cartoons, I build and deploy a Trojan Dog just to sneak past a cat.

6. My third and final short was released the same year as the animated series from clue #2, and was also the only one to feature my buddy's wife.

Once again, I know the answer, but am staying out unless necessary.

I'm going to say it's Ralph Crumde, from The Honeymooners parody, The Honey-Mouser, Cheese It, the Cat! and Mice Follies.

Yes, Saltyboot, Ralph Crumden it is. Now to explain, in case anyone was stumped:

1. He and the other mice were caricatures of the Kramdens and Nortons, natch.

2. These shorts preceded "The Flintstones," which was a prehistoric version of "The Honeymooners."

3. The shorts are very similar to "The Mouse That Jack Built," but the main difference is that in the latter, a live action Jack Benny is there at the end.

4. "The Honeymousers" was produced in 1956. Happy 60th!

5. Ralph built a Trojan Dog, but it didn't work out.

6. Trixie was only seen in the third and final short, "Mice Follies."

So you get a long overdue turn, Salty. Good job.

Great! Here's one that I'm surprised is not on the list yet.

I was in just two shorts.
I'm based on a real animal.
I live in a place that's full of nuts.

Could this be the rare and valuable Dodo Bird that Porky Pig tries to capture? His only two cartoons are "Porky In Wackyland" and "Dough For The Dodo." There was once a bird called the dodo, but its been extinct for a long while. The WB cartoons aren't close to what a dodo looked like; much closer are the peculiar dodos from Blue Sky's Ice Age film. "Protect the dodo way of life!" Ten minutes later, they're all extinct.

That's right OUB, it's the Dodo bird who lives in Wackyland. Population: 100 nuts and a squirrel.