Janus is a member of the Kresh race. It was a warrior society, everyone having to serve in the military. The entire society appears to be cyborgs built for battle.
The Kresh were at battle with the with a race they called the Scales, a reptilian breed of humanoid. Only himself, Shaara and Jude survived. They were left for dead by their enemy. They killed a traveler and stole his ship to return home. When they reached their homeworld they only found ashes and destruction. Their entire race had been annihilated.
Janus speaks with a very bad stutter. Despite of this, he is very intelligent and thorough.
Janus was created by Ron Marz and Ron Lim in 1992 and first appeared in Silver Surfer # 61.