Alec Holland (Swamp Thing)

Publication origin: the character was created for American comic books by writer Len Wein and artist Bernie Wrightson and first appeared in House of Secrets #92. The supplied sources document the character's creation and publication history, and note significant later development by creators including Alan Moore, Stephen Bissette, and John Totleben. The provided material does not supply an in-universe origin narrative or details tying the name Alec Holland to a specific canonical biographical account within the comics.

According to the supplied classification, the character is a humanoid/plant creature elemental and is principally identified by the title 'Swamp Thing.' The provided sources do not give detailed visual descriptors such as coloration, proportions, clothing, or specific plant features beyond this general classification.

The sources classify the being as a 'humanoid/plant creature elemental' within the DC Comics universe but do not enumerate specific powers, behaviors, or abilities in the supplied excerpts. No canonical list of capabilities (for example, control of plant life, regeneration, or strength) is provided in these sources.