The recent Swamp Thing series was imperfect - the pacing was pretty slow and some of the performances veered over to the cheesy side - but I still don't believe it deserved to be cancelled so abruptly. Swamp Thing himself was realized well and the show seemed to be finding its footing and building to some interesting storylines by the final episode. The sets have been destroyed and talent as moved on to other projects, so the show will not be returning. Swamp Thing may well be a part of the upcoming HBO Max Justice League Dark series, it will be interesting to see if it will be a new iteration of the muck monster or a continuation of the previous show.