The T-103 was the first mass produced tyrant, It looked like an ordinary human but had almost an infinate amount of strenghth when a T- 103 endures to much damage it usuelly mutates into a more primative form of tyrant such as the T-002 in the spencer mansion but it has both hands clawed. When injected with a certain parasite it will mutate into one of the most powerfull B.O.W's umbrella has ever invented the Nemesis project. The T-103 is basically an advanced version of the T-002 since it had the ability to find freind from foe this was what the T-002 was originally invented for but it lacked this ability.