Uncle Leo

Uncle Leo is a friendly, wandering (Vault 87) super mutant whom the Lone Wanderer can meet in a random encounter in Fallout 3.

Background
Uncle Leo is a strange mutation: a Super Mutant pacifist, who is embracing a spirit of giving and grace. He recalls his adventures to anyone who will listen, gladly gives gifts to those in need, and reveals many facts about the genesis of Super Mutants (that they are not “born” but “created” for example). The Wasteland is a safer place with this hulking beast watching with wonder at the waning moon.

Uncle Leo was exiled from his super mutant brethren because he was sowing peace and dissent among his kind. Since then, he has roamed the Capital Wasteland. If asked about his name, he will reply "I... don't know. I guess I've always just called myself that."

Effects of player actions

 * When the Lone Wanderer first speaks to Uncle Leo, he will express surprise that they haven't shot at him yet. When a dialogue option appears to tell him to give the Lone Wanderer his goods (essentially "robbing" him), he gladly imparts a suit of dirty pre-War businesswear to as a gift, wishing he could give more.
 * Asking him what he meant when he said "before I became this" causes him to tell the Lone Wanderer that super mutants are not born but are made by other super mutants in a cold, dark, metal place. He mentions that they use the captives that they take to make more of themselves, but he either doesn't know or cannot explain how this is done.
 * Uncle Leo can be encountered a second and third time. He will tell the Lone Wanderer that after their first encounter with him he fell into a dark cave while climbing a hill and hurt his leg. The cave turned out to be an old basement in which there were stacks of purified water. He tells the Lone Wanderer that after he got out of the basement he has been hunted by a group of "bleeders" (as super mutants refer to humans) and that he was forced to abandon the water he was carrying. As during the first encounter, he will offer the Lone Wanderer another suit of dirty pre-War businesswear. At the third meeting, the Lone Wanderer can express their concern for Uncle Leo, believing the Wasteland to be too dangerous for him; given his previous run-in with humans. He will explain that if he allowed his own worries to get the better of him, he would never take another step. If the Lone Wanderer happens to have Fawkes as a companion while meeting Uncle Leo a second time, he will express his shock at seeing another super mutant like him.

Behind the scenes

 * Uncle Leo's dialogue when the Lone Wanderer tries to rob him, where he tells the Lone Wanderer that the clothes are a gift and he wishes he could give the Lone Wanderer the "wonderful moon," comes from the following Zen Buddhist koan: