The character Glum, one of the Lilliputians from "Gulliver's Travels", always had a gloomy outlook on everything. He used to say things like "It'll never work, we're all doomed" in a dreary, monotonous voice.
Gavillers Travels,
Rocket J. Squirrel
Buford
Two Looney Tunes characters : The Abominable Snowman ("The Abominable Snow Rabbit") and one of a pair of dogs [I do not recall the name.] .
Wonder Twins, the were part of the Justice League.
Little Johnny Jet
Kimba the White Lion
Buford
Two Looney Tunes characters : The Abominable Snowman ("The Abominable Snow Rabbit") and one of a pair of dogs [I do not recall the name.] .
A Gremlin alongside Bugs Bunny .
Dib is one of the best characters from the Invader Zim cartoon ! Yes , Dib is cool as are the rest of the Invader Zim characters . No Gaz and Gir are said to be the best.
Wonder Twins, the were part of the Justice League.
Which character? You said "this character" but failed to mention one or provide a list of characters to choose from.
Little Johnny Jet
Dear old Bristle hound
Willoughby the Dog from the Warner Brothers cartoon, Of Fox & Hounds although, it's a reference to Of Mice & Men, hence the similarities of the titles.It was said by other characters but originated with Willoughby. See Provided Link.
Jack Skellington .
Kimba the White Lion
of course they do!who said they dont?