Here you can find every single challenger and their ID way easier than looking it up in the source code. Use ctrl + F to find the opponent you are looking for easily.
Flaming Meerca - 1
Count Von Roo - 2
Harry The Mutant Moehog - 3
Mummy - 4
Edna - 5
Balthazar - 6
The Esophagor - 8
The Brain Tree - 9
Pant Devil - 11
Space Faerie - 12
Lava Ghoul - 13
Evil Sloth Clone - 14
Magnus The Torch - 17
Shadow Usul - 18
Robo Grarrl - 19
Zafara Rogue - 22
Tiki Tack Man - 23
Chiazilla - 24
Spider Grundo - 25
Koi Warrior - 26
Highland Chia - 27
Jelly Chia - 28
The Black Pteri - 30
Chia Clown - 31
Quiggle Warlord
Snow Faerie - 33
Kauvara - 34
Ryshu The Nimmo - 35
The Snowager - 36
Cave Chia - 37
Grarrg - 38
Sabre-X - 39
Punchbag Bob - 57
Meuka - 60
Tekkitu The Witch Doctor - 61
Kasuki Lu - 62
Commander Garoo - 63
Vira - 65
Ghost Lupe - 66
Tax Beast - 83
Sidney - 85
Advisor Broo - 86
Plumbeard - 87
Meerca Henchmen - 88
Giant Ghostkerchief - 89
Boochi - 90
Snow Beast - 91
Giant Hungry Malevolent Chomby - 92
Mootix Warrior - 102
Down For Maintenance Pteri - 103
Lab Ray Scientist - 104
Kastraliss - 105
Slug Monster - 125
The Drenched - 152
Qasalan Mummy - 153
Greedy Kadoatie
Mr. Chuckles - 158
Eyrieki - 159
Lady Frostbite - 178
Cybunny Scout - 185
S750 Kreludan Defender Robot - 206
Neopets v2 - 207
Donny - 208
Valin - 209
Giant Spectral Mutant Walein - 210
Giant Space Fungus - 211
Jetsam Ace - 212
Edited by James, 20 March 2013 - 03:10 PM.