Theta was an experimental creature carrying the [[[mutagen]] virus. Dr. Winston Cray released the Theta to stop the Illuminati to steal the virus. HAZMAT Team Delta is the first to find it when they open a lift it. He has the ability to infect non-affected sentient beings, it is a carrier of the mutagen. Has the potential to effectively kill with one blow (depending on the difficulty). Right after fending off the large group of mutant and blasting the wall to the other side. Where the elevator awaits the monster appear and kill off many of the Delta Hazmat squad member and leaving Ethan Cole and Peter Chew
Ramirez and Crispy were on the other side of the blast door when a large explosion causes Ramirez to send Crispy over to check it out.Crispy is infected and when Ramirez goes over to save him he is thrown against the blast door and he instantly died.
The Theta is finally confronted at the mothership entrance and finally killed by Ethan Cole after a hard battle.
Tips for beating Theta and Super ThetaEdit
- Go into Infected mode and melee it for mutagen and launch parasites at it for health. This is the easiest way to beat the Theta.
- Theta - shoot the (censored) out of it with the pistol or Big Bouncy Gun or shot gun... anything works
- Super theta - shoot it with the Big Bouncy Gun, and when it unleashed the parasites, use the shot gun to eliminate the threat quickly and efficiently, then go back to the slaughter with the Big Bouncy Gun.