Here is Moonsie, a secret boss for a small portion in the library. He is based on creepy bedtime stories and uses the blue soul on you, and fun enough Noelle fights with you in this battle. I feel like this would be fun and i hope you find it that way too

Moonsie the Night, the weird route fight for Moonsie in ch2. Being the first and only blue soul boss so far, i really have high hopes for him. Can you and Noelle stop him from rewriting the story, see ya soon and have a good day, byeee >:)!!!!!!!!!!!!!!!!

Time to meet Eramb, you unlock under interesting circumstances, bye giving him the shadow mantle to free him from his stone form, but then he gets plugged ina nd is corrupted by Eram/The Mantle, and you and the party are sent into the game, welp see ya>:)

The Dragon, the final secret boss that will be made until ch5 comes out. This is for ch1 and is based on The Old Man telling susie that she would be the dragon and the fact we never explore the closet in the unused classroom, welp see ya and bye >:)!!!!!!

Here is Miss Taki, a Mizzle from the Third Sanctuary, who asks for the party's help to free the Torawareta rivu~aiasan from it's imprisonment and control, done by the Knight themselves, can you free it? Hope you like the project so far and see ya >:)!!!!!

Time to meet Miss Florel, the Keeper of the Destroyed Garden. Yep you get want some of you want, a flower boss for ch3, and is basically a combination of flowey and muffet in terms of battle, personality, and design, hope you enjoy it bye >:)!!!!!!!!!!!!!

Culti the Ritual Cat, a witch secret boss you can find in the second sanctuary, and in the lightworld they are Catti's occultism kit, and yes they will use the lightners in a ritual of some kind, but you gotta wait to see it so see ya and have a good time

Here's Shadow Jevil, based on Undyne the Undying, cause why not, and you can even see him wearing the shadow mantle, based on eram. For ch1 of course, you can fight him at the end of the chapter if you only open his jail but don't enter, see ya and bye>:)

The Follower, Gaster as the Knight, with angelic and susie elements. Since the knight has antlers, why not the Follower have a susie head, and since the knight has a titan color scheme, why not the follower angelic element. See ya and have a good time >:)

Seam, the High Mage, a castle town ch2 secret boss, testing you to see if you are worthy of even wielding the shadow mantle, in which of course after the fight he can't find, but he does have something, a shadow crystal in his empty eye, welp see ya >:)!!