GENERAL/STORY:
The Sentinels are large sophisticated robots created by the brilliant scientist Bolivar Trask. Trask, a notorious mutant hater, programmed the Sentinels to find and destroy mutants, hoping to make the world safer for "normal" humans. Trask died soon after their creation, but he created a Master Mold that would continue to churn out the deadly automatons. 

Sentinels possess vast weaponry, have the ability to fly and are capable of lifting several tons. Continuing their master's evil mission even after his death, the Sentinels have been reprogrammed several times by many individuals, including Onslaught. It is clear that as long as someone hates mutants, they will not hesitate to use the Sentinels against them.

...

ORIGIN:
X-men: Children of the Atom

.

OTHER APPEARANCES:
Marvel VS Capcom 2

..

REVIEW:
Sentinels were no doubt badasses throughout the X-men series, and the Sentinel who represents them in Marvel VS Capcom 2 is certainly one mean mo-fo... So many keep-away moves and projectiles! What a cheap ass and slightly overpowered character, but none the less, a badass robot doing what it does best... Destruction!!! Also worth mentioning, for a robot, Sentinels have a significant amount of personality.

Still to this day, I find it quite strange that several animations from Sentinel's debut (in X-men:COTA) didn't make it to Marvel VS Capcom 2. It's not like they looked outdated and were taken out... Actually, Sentinel's original stance animation & intro (below) looked rather awesome, but no, you won't see those animations in Marvel VS Capcom 2 for some strange reason. So did those animations really take up too much space to put in the game, Capcom? :/
 

Fighting  Style  /  Moves
Personality  /  Charisma
Outfit(s)  /  Appearance
Effectiveness  in  series
Overall Score