帝釈天と同一視される夜叉で、仏陀の道理ある問いに答えることを拒む者を雷杵で脅す役目を担い、アンバッタやサッチャカの逸話に見られる

A yakkha, identified with Sakka, whose role was to threaten with a thunderbolt anyone who refused to answer a Buddha’s reasonable question, as seen in the cases of Ambaṭṭha and Saccaka.