Viper is a man with shaved head.he has no pupils on his eyes.he wears a bulletproof suit,a pair of boots,communication device on his ear,and one of his arm is replaced by a laser gun while the other one is holding a torpedo
- Attacks: High
- Life: Weak
- Speed: Intermediate
No-one knows where he comes from, but his arrival in the Arena always fills his opponents' hearts with terror. The first heroic mutant appears to help the most deserving Psy Captains. Equipped with a secret weapon concealed inside his arm, he risks his life without fear or respite.
- He is the first Heroic Mutant to be released.
- He is also the first Heroic Mutant to have a Platinum Version.
- His Gold version resembles the Marvel character Thor.
- His Silver version resembles the Captain Harlock from the manga Space Captain Harlock.
- His Bronze version resembles to Cobra, the Space Pirate.
- His basic version resembles to Commander Shepard from the game Mass Effect
- His Platinum version is direct reference to the Big Boss from Metal Gear Solid V.
- His name also could be a reference to Solid Snake from Metal Gear series.