Well it's also possible SSE is a Shapeshifter Lizard Master > Amnesiac > Slot Machine who got visited by Gyrlander and Mesk. They'd have to roll the Necromancer and some killing night action. I guess Yagami would then be Lizard.
That'd then also mean the Lizard is the only non town tho because of the town majority rule and 4 non towns being dead already. It'd still be best for everyone to just claim their role.