Video Game Characters List of All Undertale Bosses Ranked Best to Worst  

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389 votes 53 voters 19 items

If you had to choose one, who would you say is your favorite boss from Undertale? There are definitely a lot of great boss battles in Undertale, so for this list we're going to rank every Undertale boss from best to worst. The indie darling from 2015 has an extremely dedicated cult following, so you better believe that fans of this game have strong opinions about their favorite bosses.

What exactly makes for a good boss battle? You can rate these Undertale bosses in terms of challenge-level, creativity, and overall fun. Maybe you just think they look cool, or have unique abilities that you've never seen before. Whatever the reason, vote up your favorite boss battles from Undertale, including mini-bosses when applicable.

1
23 10
Sans is listed (or ranked) 1 on the list List of All Undertale Bosses Ranked Best to Worst
Sans End of Genocide Route, Last Corridor

2
18 8
Asgore is listed (or ranked) 2 on the list List of All Undertale Bosses Ranked Best to Worst
Asgore Castle (New Home)

3
18 8
Asriel is listed (or ranked) 3 on the list List of All Undertale Bosses Ranked Best to Worst
Asriel End of True Pacifist route

4
20 10
Photoshop Flowey is listed (or ranked) 4 on the list List of All Undertale Bosses Ranked Best to Worst
Photoshop Flowey End of Neutral Route

5
15 6
Mettaton is listed (or ranked) 5 on the list List of All Undertale Bosses Ranked Best to Worst
Mettaton Lab

6
20 11
Papyrus is listed (or ranked) 6 on the list List of All Undertale Bosses Ranked Best to Worst
Papyrus Snowdin

7
18 10
Undyne is listed (or ranked) 7 on the list List of All Undertale Bosses Ranked Best to Worst
Undyne Waterfall

8
16 9
Muffet is listed (or ranked) 8 on the list List of All Undertale Bosses Ranked Best to Worst
Muffet Hotland (miniboss)

9
16 9
Toriel is listed (or ranked) 9 on the list List of All Undertale Bosses Ranked Best to Worst
Toriel Ruins

10
13 7
Greater Dog is listed (or ranked) 10 on the list List of All Undertale Bosses Ranked Best to Worst
Greater Dog Snowdin Forest (miniboss)

11
10 7
Napstablook is listed (or ranked) 11 on the list List of All Undertale Bosses Ranked Best to Worst
Napstablook Ruins (miniboss)

12
8 5
Glyde is listed (or ranked) 12 on the list List of All Undertale Bosses Ranked Best to Worst
Glyde Snowdin Forest (miniboss)

13
8 7
Amalgamates is listed (or ranked) 13 on the list List of All Undertale Bosses Ranked Best to Worst
Amalgamates True Lab (miniboss)

14
7 7
Mad Dummy is listed (or ranked) 14 on the list List of All Undertale Bosses Ranked Best to Worst
Mad Dummy Waterfall (miniboss)

15
7 8
Doggo is listed (or ranked) 15 on the list List of All Undertale Bosses Ranked Best to Worst
Doggo Snowdin Forest (miniboss)

16
6 8
So Sorry is listed (or ranked) 16 on the list List of All Undertale Bosses Ranked Best to Worst
So Sorry Art Club Room (miniboss)

17
5 7
Shyren is listed (or ranked) 17 on the list List of All Undertale Bosses Ranked Best to Worst
Shyren Waterfall (miniboss)

18
5 8
Dogi (Dogamy and Dogaressa) is listed (or ranked) 18 on the list List of All Undertale Bosses Ranked Best to Worst
Dogi (Dogamy and Dogaressa) Snowdin Forest (minibosses)

19
4 7
Royal Guards is listed (or ranked) 19 on the list List of All Undertale Bosses Ranked Best to Worst
Royal Guards Hotland (miniboss)