Klectus appeared in 2015 videogame called Monster Legends. This living nightmare crawls into other monsters minds sucking all the joy out of them. Christmas, being the happiest time of the year, is a feast for him.
Klectus is a Dark damage dealer which is a far better version of Darkzgul and loves to give his enemies nightmares, while he's sucking the life out of them. He can practically get one-shotted by any attacker but is very good and effective in the right team. He does however have some dangerous weaknesses, which could cost you your victory.