I was reading one of the golden books last night on he-man.org, and came across Allepsatsac- Castaspellas evil cousin, who wants to take away the throne of Castaspella, by delaying Castaspella on the night she must renew her vows as queen of Mysticor. She looks just like her, except her color scheme of yellow and blue is reversed and she had brown hair, not red. She seems to be in cahoots with catra, maybe this can be the explanation as to why Castaspella ( or Allepsatsac) somethimes worked with Catra and Entrapta. Any how another new character that could be added to the rank of the horde or a cool variant and a way to justify Filmation (Castaspella) and Toy version (Allepsatsac).
Check out so shots of her!