A Predalien (Alien vs. Predator) is a Xenomorph that was spawned from the body of a Predator, granting it a Predator's features and strength superior to Predators and normal Xenomorphs.
The Venom symbiote (Marvel Comics) inherited the powers of its first known host, Spider-Man.
The Tarkatan Xenomorph (Mortal Kombat X) was born from the body of a Tarkatan, and thus has inherited its traits, such as retractable arm blades.
The Fire-Eater Alien (WildC.A.T.s/Aliens) was born from the body of the superhero Fahrenheit, thus gaining the power to breathe fire instead of spitting acid.
The Kytinn (Mortal Kombat) become stronger depending on the strength of the host they incubate within, with those born from the body of an Elder God like Shinnok being nigh-unstoppable.
The Vampiric Queen (Aliens/Vampirella) was born from the body of the vampiric alien Vampirella, granting it vampiric attributes such as wings.
The DarkAlien (Witchblade/Aliens/Darkness/Predator: Mindhunter) was born from the body of one of Jackie Estacado's Darklings, thus gaining the power to blend into and regenerate in darkness.