The MX-Titans are a group of robotic fighters that are in Infinity Blade II. All have the same robotic-humanoid build with white, grey, and red plating, reminiscent of the Zero Mech. The sounds of all the MX-Titans are somewhat similar, with the exception of the MX-Goliath.
The MX-Defender represents the large sword and shield type enemy. He is the strongest of all the medium MX type enemies. He has an unknown helm and armor but his shield is the Kreiger and his sword is the Balak. All of his heavy armor makes a very robotic sound when they hit together.
MX-Enforcer represents the large staff-wielding type enemy. He seems to be a cyborg because you can see skin on his arm. His armor and helm are unknown. He carries a large staff, the Hurricane, a hidden heavy weapon.
MX-Stealth represents the large dual sword type enemy. He is the weakest of the medium type MX-Titans but the fastest. His armor may be the Aegis Armor but his helm is unknown. His wields dual Iron Rods.
MX-Hulk represents the giant, heavy weapon type enemy. He carries a weapon called the Dalid, but his armor and helmet are unknown. He is the second strongest MX-Titan, but is the slowest. However, for a giant enemy he is quite fast, and several of his attacks are augmented by jet thrusters. Parts of his body can be seen where you fight MX-Goliath.
MX-Goliath is the name of the robot piloted by the Exo-Pilot. It is the strongest Blood Sentinel fought, surpassing the Stone Demon and Archivist. He is a monstrosity, so he has no weapon. He fights with his bare hands.