Henry's first mention is by Taggart in some old ECHO recordings, in which it was described as having watched Taggart's camp. Later on it attacked and killed the rest of camp's inhabitants. Eventually Taggart's hands were eaten, and in his final ECHO recording it is revealed Henry had also eaten Taggart.
Henry's rare drop is The Cradle, a Tediore shield.
Henry drops a very rare purple head for each class.
Henry can be killed just after it spawns, resulting in no loot.
Phaselocking Henry as it jumps out to attack can result in it becoming stuck under the ground. Any loot it drops in this condition will be lost.