[1] Top Dog was created by writer Lennie Herman and artist Warren Kremer.
The duo go on to have adventures involving spies, criminals and mad scientists, after it is revealed that Top Dog was formerly "Mr. X", a government agent who was valued for his intelligence, but had to disguise his canine nature with a cover ID and a full-body cloak.
Amongst these adventures were several crossovers with other Star Comic characters such as Heathcliff and Royal Roy.
Although it was actually an actor in a Spider-Man suit, the real Peter Parker does make an appearance.
Top Dog reappeared in the 2009-2010 X-Babies miniseries Stars Reborn, as both a copy of himself produced by Mr. Veech to throw the X-Babies off his trail, and an Earth-616 version of himself, who happens to be a cyborg canine, rather than just an intelligent talking dog.