Theory - Ralsei is Going to Pull a 180 (Deltarune Theory)

I will first start off with Ralsei’s tutorial in the game. When we get to the attack part, we see an attack that’s somewhat… familiar. It’s Flowey’s “friendliness pellets” (well, the two attacks are fairly similar). I believe everything in Deltarune is based on something in the closet, such as the playing cards and the checkerboard. But Ralsei doesn’t seem to fit into any of this. At the beginning of the game, Ralsei is introduced as the “Prince of Darkness”, “the prince with no subjects”. The lonely prince. But he’s not based on anything… but Kris’ brother, Asriel. Asriel is implied to be the best brother ever, until he “deserted” Kris and left for university. Kris feels betrayed, so if Ralsei is a representative of Asriel, or the kind person that Asriel “used to be”, I have a feeling Ralsei will betray us too. Perhaps he’s even the Knight spoken of, that introduced the pillar of darkness and will “save the dark world”. In Undertale (the pacifist route), the person who had seen the surface destined to clear out the Underground was not us, but Asriel Dreemurr. If Ralsei is based so much on Asriel and there is a legend about the Knight, the Knight may as well turn out to be Ralsei.

Typing “Flowey” as a name would result in the game responding with something like “What a funny coincidence” which is interesting since it only usually says something like that when there is already a character with that name.

Asriel Dreemurr in Undertale with wings represents the Delta Rune, the legend of the angel who saw the surface and would clear out the underground. Then there's the game Deltarune and the Knight may as well be Asriel. Another similarity between Undertale and Deltarune relating to Asriel Dreemurr is that the legend of Delta Rune in Deltarune consists of the banishing of an angel. Perhaps this “angel” is Ralsei/the Knight/Asriel Dreemurr. At the end of Deltarune, for some reason, Ralsei doesn’t come with Kris and Susie to the Pillar of Darkness.

Ralsei’s cloak is similar to Asriel Dreemurr (seven souls), with the heart in the middle. Also, why would Ralsei need to cover himself in shadows and a large cloak all of the time? You may as well call this the anime thing where what we can see isn’t what everyone in the anime is seeing, but when Ralsei takes off his hat (keep in mind he only reveals his face and he only does this when only Kris and Susie were there to see him), Susie was clearly shocked.