brian
The name of the cow in the Magic Roundabout is Ermintrude.
The rabbit on the Magic Roundabout is named Dylan.
Brian the Snail: http://en.wikipedia.org/wiki/Magic_roundabout
Break Blade
The girl was played by Suzanne Somers. Her character was 'Blonde in T-Bird'.
Looney Tunes
The initials G & B are the initials of her parents' first names, and the word Gooney Bird is a type of albatross bird with similar characteristics to the character.
Big Bird is the large yellow ostrich character on Sesame Street.
If the one you are thinking of the main bird character then it's probably blu.
Flint the Time Detective, assuming you are talking about the old series on FOXKids.
The yellow bird character who is Snoopy's friend in Peanuts is Woodstock. He is known for being small, chirpy, and always by Snoopy's side, despite not speaking any recognizable language in the comic strip.