Billy Whizz

A character dressed in a red shirt was depicted on the cover of The Beano Summer Special 1981 at Dolphinarium, next to several other characters. (TV: The Rings of Akhaten, The Universe is Calling)

Behind the scenes
Although unnamed in the Doctor Who universe, the character is called Billy Whizz in The Beano comic books, which crossed over with the Doctor Who universe in Dennis the Menace in Balloonatics and The Invasion of Bash Street.