Bolivar Trask

Bolivar Trask was the architect for the US Government 'Sentinel Initiative', a response to Magneto's terrorist attacks on Capitol Hill. Initially, the Sentinels patrolled Los Angeles, and then New York City, destroying any human containing mutant genes. However, these attacks ceased after the X-Men rescued the President's daughter from the Brotherhood of Mutants. Trask discovered the location of the Savage Land, and by the order from the President of the United States, he dispatched his Sentinels to destroy Magneto's paradise. This proved to be a foolish move when Magneto easily reprogrammed the chromium-built machines to destroy humankind. After a subsequent Sentinel attack on Washington, D.C., the Sentinel Initiative was shut down.

Trask was also the employer of Richard Parker and Edward Brock Sr. (the fathers of Peter Parker/Spider-Man and Eddie Brock/Venom) that stole their cancer cure project (The Venom suit) because he was more interested in military applications. He has recently been employed by the Fenris twins to build the new Sentinels currently attacking mutants. This would suggest that the government no longer employs him, perhaps due to the failure of the Sentinel Initiative. Feeling horrified by all that he has done, he allows himself to drop into the heart of an explosion and is killed.