Spoiler:
1: Houndoom
2: Sandshrew
3: Gengar
4: Numel
5: Altaria
6: Hitmontop
7: Typhlosion
8: Sandslash
9: Serperior
10: Raichu
11: Celebi
12: Dragonite
13: Mewtwo
14: Drapion
15: Scizor
16: Hariyama
17: Feraligatr
18: Bulbasaur
19: Klinklang
20: Suicune
21: Breloom
2: Sandshrew
3: Gengar
4: Numel
5: Altaria
6: Hitmontop
7: Typhlosion
8: Sandslash
9: Serperior
10: Raichu
11: Celebi
12: Dragonite
13: Mewtwo
14: Drapion
15: Scizor
16: Hariyama
17: Feraligatr
18: Bulbasaur
19: Klinklang
20: Suicune
21: Breloom