Swan

Swan is a creature found in Swan's Pond in Fallout 4.

Background
Swan, formerly Edgar Swann, is a large, legendary super mutant. Prior to his transformation, Edgar Swann was a criminal who volunteered as an FEV test subject in exchange for an opportunity at probation; this was under the condition that he keep written notes on his progress. Within a week, he begins to mutate - within two, he possesses not only massively increased strength but also significantly increased intelligence.

Unfortunately, judging by the notes on the shack next to the pond and his aggressiveness, he seems to have degenerated into a psychopathic monster by the time the Sole Survivor finds him.

Biology
Swan resembles a super mutant behemoth, being noticeably larger than 'common' super mutants - though perhaps not quite as large as the behemoth seen at Fort Strong.

Gameplay attributes
Swan is a boss creature found at Swan's Pond, an outdoor location in the middle of the city. In the middle of the pond is a pile of debris made up of a white swan, a tire and a branch; this pile occasionally shifts in place. Should the Sole Survivor or their companion approach the mass, it will reveal itself with a roar, emerge from the water, and start attacking. Damaging the pile may also cause Swan to emerge.

Like super mutant behemoths, Swan can throw rocks at distant foes.

Loot
A Legendary Furious Power Fist can be found on Swan's body after he has been defeated. It comes with the Puncturing upgrade (increased damage and armor penetration) and consecutive hits against a single target cause it to deal increased damage to that target.

Swan also drops an assortment of other items, including several fragments of the swan that makes up part of his outfit. This debris contains components that are useful for crafting certain items.

Appearances
Swan appears only in Fallout 4.