Wiktionary
doppleganger
n. (misspelling of doppelganger English)
Wikipedia
Doppleganger (video game)
Doppleganger is an action-adventure game designed by David T. Clark and published by Alligata Software and Americana for the Amstrad CPC in 1985. It is unrelated to the text adventure game Dopplegänger which was released that same year.
Usage examples of "doppleganger".
Smith lying in a crumpled heap on the stones, where his mutant doppleganger had thrown him.
Was I apparition leading him out or doppleganger pursuing him, probing and limiting his flight?
Baylee ducked to the side, reversing the mop handle again and striking the doppleganger on the side of the knee with a meaty smack.