Former king D. Aster Kensolet died... Frisk is now called "Scour" (They named themselves this so no one would pick on them) Flowey is "Bloomy" (Yeah.) Napstablook is "Bandyclook" (After "BandCamp" and "spook") Toriel is called "Lassie" (Based on "class") Sans is called "Connare Kensolet" (Named after the creator of the Comic Sans font, and the last name is the royal family's name: An anagram of skeleton.) Papyrus is called "Mateo "CoolDude" Kensolet" (Based on the font of the same name) Undyne is called "Etyrn" (Based on "Eternal") Undyne the Undying is "Etyrn The Eternal" Alphys is called "Komemegai" (An anagram of "timid amigo") Mettaton is now "Solderment" (A portmanteau of solder and implement) Mettaton EX is now "Solderment Titan" Mettaton NEO is now "Solderment LEGEND" Asgore is now "Taksid" (An anagram of the first six letters of the greek word for "hesitant") Asriel is now Laksid (You know why.) There's also Laksid, Being Of Chaos if you're interested. Chara is now "Tempe" (The first five letters of temperament) Tempe has a robot body. It's knife-based. Yep. Frisk has an orange and blue shirt because Papyrus.
Vectors coming soon! Characters keep their Undertale heights. Their Phases stay the same as well, so Etyrn WILL become Etyrn the Eternal on Genocide, despite being fought in the Ruins.