Chancer is an undead Chansey, with black, empty eye sockets. The color on its body is dull and faded. It has cracks all over its body and has a ghostly, wispy tail. Inside of its pouch, there is a human heart. Blood seems to be flowing out of its eye sockets, though this could be a pattern on the body.
Chancer, along with its pre-evolution, Hanginy, has the lowest base Attack and base Defense stats of all Pokémon.
Aside from being an undead Chansey, it may be a nod to the cliche Pokemon creepypastas that ran rampant during the late 2000s and early 2010s, with its empty eye sockets and bloody tears. Its shiny sprite resembles a rotten egg.
Its name is a combination of Chansey and "Cancer". Also the word "chancer," meaning someone who will resort to underhanded tactics to win.