|This article is about a/an ally in Chikyuu Sentai Fiveman.|
Arthur G6 (アーサーG6 Āsā Jī Shikkusu): A support robot created by Doctor Hoshikawa, Arthur was the one who raised the orphaned children on Earth, becoming the closest thing they had to their parents, giving them everything from food and drink to medical care. He usually aids Fiveman from the Magma Base but at times he can fly out from base and transform into Earth Cannon.
Super Sentai Strongest Battle
Arthur G6 joined the Super Sentai Strongest Battle as a member of Support Team, but lost the competition either in the first round against the International Team offscreen or won against them and lost in the second round against Martial Artist Team offscreen.