Otento

Otento (オテント, Otento) is a powerful esper and leader of the rogue esper group Eleven.

History
Tatsumaki once encountered Otento in the past and the encounter made her sick to this day.

Neo-Heroes Arc
Tatsumaki is tasked with hunting down Otento and their group Eleven by the Hero Association as part of their agenda to regain public prominence.