Justice League Aquaman is a 3-star base Might gold character. He is a deadly team fighter especially when in combination with Justice League Cyborg for his very high basic armor pierce chance, coupled with Cyborg's extreme basic damage boost, making Justice League teams an overwhelming force, and his supermove can even resurrect a teammate to wreck havoc once again.
His passive can revive any teammate (including non-Justice League teammates). If they have used their own supermove, they will still retain their super buff and cannot use another super. The Joker's on-KO passive can activate again if he is KO'd again. However, Unbreakable Cyborg and Primal Swamp Thing do not regain access to their own revival passives.