Alex is the latest in tyrant development. He is a new kind called a "sleeper tyrant". This type remains in human form "asleep mode" until engaged in combat. He then transforms into a tyrant (awakened mode) in order to fight back. Alex is referred to as the T-094. He was experimented on by using the T-virus as well as the G-virus samples that were secured by the Umbrella agents. Ever since the tg-virus experiments that made Alex what he is, he swore vengeance against Umbrella by destroying all that they created with the exception of himself.