I have once made a pretty grim/edgy concept for Nexo Knights, where the villains would be Knights Kingdom characters ressurected as warcraft-esque Death Knights. Death Knight Danju in pictures. : r/lego
LEGO Nexo Knights 2017 sets pictures! - YouTube
JANGBRiCKS LEGO reviews & MOCs: LEGO NEXO Knights General Magmar's Really Long Set Name review!