Acid secretion is the ability to generate and secrete a highly corrosive acid.
- Leonard Cushing is the only character known to have this ability.
- According to the assignment tracker map, an unknown robber in Brazil has this ability.
Cushing can produce acids that dissolve metal substances and burn skin. According to his assignment tracker profile, he performs "multi-directional transdermal acid secretion". Cushing seemingly requires active concentration to use his ability and can control the levels of acidity he generates.
Although it was originally presumed that he also used this power to kill Jamie Wu, he vehemently denied responsibility for the murder.