Agatha Harkness - Agnes
She’s the one pulling the strings, she’s the Sokovian fortune teller that gave the twins fish, or she could be seen as the shark in the animated commercial feeding SW magic... she’s the wolf in the red riding hood tale hinted at in the series... In the comics she has a cat and I’m guessing that’s maybe why she killed the dog in the series.
Karl Mordo - Herb
And this one is a bit more of a stretch but he’s in cahoots with Agnes, they talk in the series about Shangri La/Kamar Taj, the boots... the “losing power” line... the library and books... Also taking into his connection with Doctor of Strange and the participation of the Scarlett Witch in Multiverse of Madness.