Animalities first appeared in Mortal Kombat 3, released in 1995, as a new type of finishing move in which the winning fighter transformed into an animal to defeat the loser. The move became a signature part of the series' arcade era, remembered alongside fatalities and friendships for pushing its finishing moves further into spectacle. As gameplay clips, compilations and reaction videos spread online, the distinctive animality cue became shorthand for a sudden, over-the-top transformation. It remains popular with fighting game fans and meme editors because it instantly recalls that arcade moment.