This is a plastic model figure of
Tails the Fox, from the Sonic the Hedgehog gaming franchise by SEGA.
Stands approximately 4cm or 1.5 inches tall. Came from a Christmas cracker in 1992, if I recall correctly.
In great condition other than a small blue smudge on his chest, owing to a troubling incident in which Sonic decided to attack his best friend. What a jerk.