The Mark XXV (Mark 25), also known by its code-name as "Striker" or "Thumper", is a Heavy Construction Suit, and was one of several new Iron Man Armors created by Tony Stark as part of the Iron Legion. The armor was created sometime after the Battle of New York.[1]
It was featured in Iron Man 3, and made it's debut when Tony ordered J.A.R.V.I.S. to initiate the "House Party Protocol", in which it was activated along with all the other suits to aid Tony in his battle against Aldrich Killian and his Extremis enhanced soldiers.
The suit earned it's name the "Striker", because of it's powerful jackhammer like hands that can pulverize concrete. It was built for helping in heavy construction and specializes in raw power. It can also withstand temperatures and electrical surges. It is the first suit to have a green colored Arc Reactor instead of the classic blue, a feature that is unique with the suit.