Is either 触手 / しょくしゅ [shokushu] ('tentacle') or テンタクル [tentacle] in Japanese.
Final Fantasy III
Other: two of these spawn with Cloud of Darkness. Please see that page for details
Crystal Chronicles
Tentacle (Fire)
HP: 48, STR: 12, MAG: 12, DEF: 9, Type: -, Number: 067
Complete Immunity: Fire/Burn
Status Immunity: Heavy
Lv1 Immunity: Stun
Strong Resistance: Gravity
Resistance: Thunder
Abilities: Slash, Fira, Fire Ball, Quake
Place: Mount Vellenge
Other: appears as an HP 36 version in battle with Meteor Parasite, which doesn't have Heavy or Stun immunity either
Other: テンタクル in Japanese
Tentacle (Ice)
HP: 48, STR: 12, MAG: 12, DEF: 9, Type: -, Number: 068
Complete Immunity: Blizzard/Freeze
Status Immunity: Heavy
Lv1 Immunity: Stun
Strong Resistance: Gravity
Resistance: Thunder
Abilities: Slash, Blizzra, Ice Ball, Quake
Place: Mount Vellenge
Other: appears as an HP 36 version in battle with Meteor Parasite, which doesn't have Heavy or Stun immunity either
Tentacle (Lightning)
HP: 48, STR: 12, MAG: 12, DEF: 9, Type: -, Number: 069
Status Immunity: Heavy
Lv1 Immunity: Burn, Stun
Strong Resistance: Gravity
Resistance: Fire, Thunder
Abilities: Slash, Thundara, Thunder Ball, Quake
Place: Mount Vellenge
Other: appears as an HP 36 version in battle with Meteor Parasite, which doesn't have Heavy, Stun or Burn immunity either
Tentacle (Dark)
HP: 48, STR: 12, MAG: 12, DEF: 9, Type: -, Number: 070
Complete Immunity: Gravity/Heavy, Slow, Stop
Lv1 Immunity: Burn, Freeze, Stun
Resistance: Fire, Blizzard, Thunder
Abilities: Slash, Slowga, Poison Ball, Quake
Place: Mount Vellenge
Other: appears as an HP 36 version in battle with Meteor Parasite, which also has Burn, Freeze, and Stun status immunity and greater resistance to Fire, Blizzard, and Thunder
Category: Bestiary