Lyrics:

P-O-C-K-E-T M-O-N-S-T-E-R-S
Singing [bad word]  up: Mushi Pokémon Part One
Here we go!
 [bad word] Mori ya kusachi ni ooku seisaku. Atama no saki ni
Go-senchi kurai no chiisaku [bad word] dokubari wo motsu.

KOKUUN
Otona no karada wo [bad word] tame no ichijitekina
Joutai. Jibun de wa hotondo ugokenai.

SUPIĀ
Shuudan de [bad word] koto mo [bad word]  Mou supiido de
Tobimawari oshiri no dokubari de [bad word] 

KYATAPII
Midori no hifu ni oowarete [bad word]  Dappi [bad word] [bad word] to ito wo kakete sanagi ni [bad word] 
 [bad word] Katai kara ni tsutsumarete [bad word] ga nakami wa
Yawarakai no de tsuyoi kougeki ni wa taerarenai.

BATAFURII
Hane wa mizu wo hajiku rimpun ni mamorarete [bad word] 
Ame no hi demo sora wo tobu koto ga [bad word] 

Lyrics (translation)

P-O-C-K-E-T M-O-N-S-T-E-R-S
Singing [bad word]  up: Mushi Pokémon Part One
Here we go!

Beedle
It is often found in forests and grasslands.
It has a sharp, toxic barb of five centimeters on the top of its head.

Cocoon
It is in a temporary stage while making its adult body.
It can hardly move at all.

Spear
May appear in swarms.
Flies at violent speeds, recklessly stabbing with its stinger.

Caterpie
It is covered in green skin.
As it grows, it sheds the skin and covers itself in threads to [bad word] a chrysalis.

Trancell
Though its shell is rock-hard, its body is still soft,
So it cannot endure a harsh attack.

Butterfree
Its wings are covered in scales that protect against water.
So it can even fly through the sky on rainy days.