D&D 5E One Legged Character

[marcelvdpol]

Play a Monk with a Peg Leg, using it as a Monk weapon, unarmed strike and as a blowdart. Start with 10-15 movement less but get the full increase from Monk speed increase as you "learn" how to make the Peg leg still work for you. Hide a knife in the Peg leg or hide an extendable grappling hook in it for surprise Kung Foo moves in combat.

 

[darjr]

I have a player who has a character with a pegleg. After every dash action he falls prone. Surprisingly it's saved his character at least once.

 

[SwivSnapshot]

You paid a necromancer to graft the leg from a corpse onto the your body.

No proficiency penalties, but at night when you are resting, it keeps trying to crawl off and find it's own body.

 

[marcelvdpol]

Legendary item: The Leg of Vecna [Legendary]

To use this item, a humanoid creature must voluntarily cut off its own leg. The creature may choose either the left leg or right leg.

A humanoid creature with good standing with the Leg of Vecna has +15 movement speed and can jump an additional 15 feet both horizontally as well as vertically in addition to its normal jump distance. A Monk in good standing with the Leg of Vecna may use the Leg of Vecna in its Flurry of Blows attack, dealing an additional Monk Unarmed strike damage die on a hit. A humanoid creature with good standing with the Leg of Vecna may use a bonus action to Dash and may stand up from prone without expanding movement.

A humanoid with an indifferent standing with the Leg of Vecna gains a +10 movement speed.

A humanoid with a hostile standing with the Leg of Vecna looses half its movement speed. In addition, a humanoid with a hostile standing with the Leg of Vecna cannot jump either horizontally or vertically. Whenever such a creature enters difficult terrain, it must make a dexterity saving throw or fall prone (doing no damage). Roll only once per turn.

 

[StriderUrbs]

You could also have a cleric or construct a leg the same way he would construct a golem (I think it's still a Cleric thing; it was in Advanced, leastways): it would be made of wood, stone, clay, flesh, or the like, and would have no movement bonuses or penalties.
However, it would be tricky to theoretically synchronize the artificial life of the construct to your actual being; this might have to be a very high-level cleric we're talking here. So I'd say either get rich fast, or get real pious and do something for a powerful church.