Tentacle(たこあし, Takoashi?, lit. Octopus Tentacle), also known as Octentacle, is a recurring ability in the series. It is oftentimes the ability of Ultros, which deals non-elemental physical damage to the enemy party.
Tentacle is Ultros's special attack, inflicting moderate non-elemental damage to either one or all party members. Its Battle Power is 146, and it is unblockable. It can also be used by Guardian when it goes into Ultros mode. Devourer and Malboro Menace can also use Ultros's powerful Tentacle attack.