Here's a list up to plundor which I found via google...
Previous challenges....
1 Modulok
2 Blast Attak
3 Spikor
4 Frosta
5 Gwildor
6 Goat Man
7 Optikk
8 Flogg
9 Ceril
10 Filmation Clawful
11 Horde Elephant/Mammoth prototype
12 He-Ro
13 Strongarm
14 Lizard Man
15 Rotar and Twistoid
16 Saurod
17 Adora
18 Platino
19 Dylamug
20 Kittrina
21 The Rock People
22 Clamp Champ
23 Granymyr
24 Slavemaster and Jawbreaker
25 Evil Robot
26 Garth
27 Mosquitor
28 Faker II
29 Megator
30 Icer
31 Madam Razz
32 Multi Bot
33 Weaponstronic
34 Scareglow
35 Horde Mummy
36 Batros
37 Plundor
I could have sworn I won Rotar and Twistoid...
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