Paul Damore in his costume, as The Swamp Thing (Dr. Alec Holland) is a character and antihero in comic books published by DC Comics. He is a humanoid/plant elemental creature. Swamp Thing has had several humanoid or monster incarnations in various different storylines.
Cosplay, a contraction of the words costume play, is a performance art in which participants called cosplayers wear costumes and fashion accessories to represent a specific character.
Cosplayers often interact to create a subculture and a broader use of the term "cosplay" applies to any costumed role-playing in venues apart from the stage. Any entity that lends itself to dramatic interpretation may be taken up as a subject and it is not unusual to see genders switched.