Originally I was going to follow the coffin order in the cannon Undertale. . . Until i decided to scrap that Idea and just make my own.

• The first Human to fall is Chara, as show on the timeline represented by the red soul (And it's common knowledge at this point ).

• 4 years after Chara fell down, The second human to fall is Valor, as shown on the timeline represented by the Orange Soul.

• ?? after Valor fell down, The third human to fall is [???], as shown on the timeline represented by the Cyan Soul.

• ?? After the third human fell down, The next Human to fall is [☠︎♋︎❍︎♏︎ ⧫︎♒︎♏︎ ☞︎♋︎●︎●︎♏︎■︎ ☟︎◆︎❍︎♋︎■︎📬︎]

  (A.K.A. ❄︎︎♒︎︎♏︎︎ ■︎♏︎︎⌧︎︎⧫︎︎ ☟︎︎◆︎︎❍︎︎♋︎︎■︎︎ ⧫︎︎□︎︎ ☞︎︎♋︎︎●︎︎●︎︎ ♓︎︎⬧︎︎ 🕆︎︎◻︎︎ ♐︎︎□︎︎❒︎︎ ✋︎︎■︎︎⧫︎︎♏︎︎❒︎︎◻︎︎❒︎︎♏︎︎⧫︎︎♋︎︎⧫︎︎♓︎︎□︎︎■︎︎📬︎︎ 💧︎♋︎❍︎♏︎ ⧫︎♒︎♓︎■︎♑︎ ♑︎□︎♏︎⬧︎ ♐︎□︎❒︎ ⧫︎♒︎♏︎ □︎❒︎♎︎♏︎❒︎ ⧫︎♒︎♏︎⍓︎ ♐︎♋︎●︎●︎ ♓︎■︎ ♋︎♐︎⧫︎♏︎❒︎ ⧫︎♒︎♏︎ ⧫︎♒︎♓︎❒︎♎︎📬︎)

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And that's the timeline for UTBB!