But it`s Canonswap, Canonswap : Vengeance, the phase 3 is just DISBELIEF phase 4 but Canonswap, because I don`t fricking know who is taking the role of Gaster there.

Here are the names I came up with for the phases :

Phase 1 : No Longer Fazy Anymore ( Fazy in this title means "Fat and Lazy" )

Phase 1.5 : Rejecting Sanity ( JoJo reference? )

Phase 2 : The Insanity Grows

Phase 2.5 : Inner Grief ( Yare Yare.. )

Phase 3 : My Way

Phase : 3.5 The End For The Brave One ( Reference to End for the Bonely One. )