Did Toffee Kill Solaria?

the septarian in eclipsas book looks just like toffee and the way he is described looking good in a suit , and attractively aloof(cool and distant) all fits toffees character who always wears a suit besides the flashback.

What happened Queen Solaria?

Solaria eventually lost her life in a nighttime monster ambush, and Eclipsa ascended to the Mewni throne—with Shastacan as her betrothed king, as imposed by Solaria's will. ... In "Cleaved", she appears as a ghost again in the Realm of Magic as Star, Moon, and Eclipsa destroy the magic.

What happened to Toffee in star vs the forces of evil?

Toffee is a major antagonist of Star vs. the Forces of Evil. ... After blowing up and cleaving Star's wand in "Storm the Castle", Toffee is presumably dead. It is later revealed in "The Hard Way" that he possesses Ludo's body, and half of the wand's magic is under his control.