Octopus

Octopus can refer to:
 * Octarians, a race based on octopuses.
 * Octoling (playable).
 * Octoling (enemy).
 * Octolings in their octopus form.
 * The Octoling Octopus amiibo.

Or the Splatfest events:
 * Squid vs. Octopus (2015)
 * Squid vs. Octopus (2018)