Thanks to tomat.dev for the ID list and UTMT for providing Gamemaker moddiing! 


Id 	Monster(s) 	
1 	TestFroggit(x3) 	
2 	Dummy 	
3 	Tutorial Froggit 	
4 	Froggit 	
5 	Whimsun 	
6 	Froggit, Whimsun 	
7 	Moldsmal 	
8 	Moldsmal(x3) 	
9 	Froggit(x2) 	
10 	Moldsmal(x2) 	
11 	Moldsmal, Migosp 	
12 	Migosp, Vegetoid 	
13 	Loox 	
14 	Vegetoid, Loox 	
15 	Loox, Vegetoid, Migosp 	
16 	Vegetoid(x2) 	
17 	Loox(x2) 	
18 	Vegetoid 	
19 		But nobody came.
20 	Napstablook 
21 	Loox(same as 13) 	
22 	Toriel 	
23 	Doggo 	
24 	Lesser Dog 	
25 	Dogamy, Dogaressa 	
26 	Greater Dog 	
27 	Papyrus 	
28 	Gyftrot 	
30 	Snowdrake 	
30 (alt) 	Chilldrake 	
31 	Chilldrake(x2) 	
32 	Icecap 	
33 	Icecap, Snowdrake 	
33 (alt) 	Icecap, Chilldrake 
34 	Jerry 	
35 	Icecap, Jerry 	
36 	Icecap, Jerry, Snowdrake 
36 (alt) 	Icecap, Jerry, Chilldrake 	
40 	Aaron 	
41 	Temmie 	
42 	Moldsmal(x2) 	
43 	Woshua 	
44 	Shyren 	
45 	Mad Dummy 	
46 (cutscene) Aaron, Woshua 	
47 	Undyne 	
48 	Mettaton(quiz) 	
49 	RG 01, RG 02 	
50 	Tsunderplane 	
51 	Vulkin 	
52 	Pyrope 	
53 	Moldsmal(x2) 
54 	Woshua, Aaron 	
55 	Moldbygg, Woshua 	
56 	Muffet 	
57 	Mettaton(tile maze fight) 	
58 	Undyne 	
59 	Madjick 	
60 	Knight Knight 	
61 	Final Froggit 	
62 	Astigmatism 	
63 	Whimsalot 	
64 	Whimsalot, Final Froggit 	
65 	Whimsalot, Astigmatism 	
66 	Final Froggit, Astigmatism 	
67 	Final Froggit, Astigmatism, Whimsalot 	
68 	Knight Knight, Madjick 	
69 	Bomb(bomb) 	
70 	Bomb(dog) 	
71 	Bomb(glass)	
72 	Bomb(script)	
73 	Bomb(basketball) 	
74 	Bomb(present) 	
75 	Bomb(game) 	
76 	RG04, RG03 	
77 	Tsunderplane, Vulkin 	
78 	Pyrope(x2) 
79 	Vulkin(x2) 	
80 	Mettaton(pre-EX) 	
81 	Mettaton EX 	
82 	Lemon Bread 	
83 	Reaper Bird 	
84 	Amalgamate (Snowdrake's mom) 
85 	Memoryhead(x3) 	
86 	Endogeny 
87 	Lost Soul (Undyne) 	
88 	Lost Soul(x2) (Papyrus, Sans) 	
89 	Lost Soul (Alphys) 	
90 	Lost Soul(x2) (Toriel, Asgore) 	
91 	Monster Kid 	
92 	Undyne the Undying 	
93 	Glad Dummy 	
94 	Mettaton NEO 	
95 	Sans 	
100 	Asgore(pre-battle cutscene) 	
101 	Asgore 	
120 	Final Froggit, Astigmatism 	
121 	Final Froggit, Migospel 	
122 	Parsnik 	
123 	Moldessa(x2) 	
124 	Moldessa(x3) 	
125 	Final Froggit, Whimsalot 	
126 	Final Froggit 	
127 	Whimsalot, Parsnik 	
128 	Moldessa, Migospel 	
129 	Parsnik, Migospel 
130 	Parsnik(x2) 	
131 	Parsnik, Astigmatism 	
132 	Astigmatism(x2) 	
133 	Astigmatism, Migospel, Moldessa 	
134 	Whimsalot, Parsnik, Moldessa 	
135 	Glyde 	
140 	So Sorry 	
141     Mad Mew Mew
255 	Asriel Dreemurr 	
256 	Asriel 