Pokémaniac

1. Proto-Germanic*puhô
2. Frankish*pokō
3. Old Frenchpoche
4. Anglo-Normanpoket
5. Middle Englishpocket
6. Englishpocket
7. Japaneseポケット
8. Proto-Indo-European*men-
9. Proto-Indo-European*monéyeti
10. Proto-Italic*man-eje-
11. Proto-Italic*moneō
12. Proto-Italic*monestrom
13. Latinmōnstrum
14. Old Frenchmonstre
15. Middle Englishmonstre
16. Englishmonster
17. Japaneseモンスター
18. Japaneseポケットモンスターclip.
19. Japaneseポケモン (Pokemon)
20. EnglishPokémon
21. Proto-Indo-European*men-
22. Proto-Indo-European*mn̥yétor
23. Proto-Hellenic*məňňómai
24. Ancient Greekμαίνομαι (maínomai)
25. Ancient Greekμᾰνῐ́ᾱ (mănĭ́ā)
26. Ancient Greekμανιακός (maniakós)
27. Late Latinmaniacu
28. Frenchmaniaque
29. Englishmaniac
30. EnglishPokémaniac

Blend of Pokémon + maniac. Derived from "POKéMANIAC", the name of a class of opponent characters in-game. The characters are nowadays seen donning cosplay pieces resembling the Pokémon creatures (though originally wearing lab coats and portrayed as being somewhat lunatic). "POKéMANIAC" was the term used in the English translation for the aforementioned, originally called 「かいじゅうマニア」 [kaijuumania] ("monster maniac") in Japanese. Equivalent to Poké- + maniac.