What I think

[Arctic Owl]

Idk what does the PU mean but my favorite Pokemon is Sceptile :)

 

[ILoveGarchom]

 

[EB]

I always thought PU was PoorlyUsed, i heard some people say that this was the meaning, but appearently it's just a pun bc P.U is used to denote that something is disgusting

Btw Sceptile is a based favorite mon