(I think you're thinking of Yamega, Vincent XD. I'll give a Z)

Z is for Zangoose.

(xD I try so hard on Z's I swear I think up names.)

A is for Absol. :3

(I think there are only 2 Pokemon whose names start with "Z" lol. At least, those are the only ones I can think of)
B is for Bulbasaur!

(and I'm trying to think of more. XD OH Zubat. -hits head- XD)

C is for Charmander. 8D

(Zubat was my first thought, but I wanted to say Zangoose instead. There are more Zs, now that I look, but those are the two I remember. I forgot Zapdos, though.)
D is for Delphox. Bringing some new Pokemon in here!

( And Zygaarde or w/e One of the newer legendaries. XD Zapdos, too. /writes these down XD)

E is for Emolga. 8D

(Yeah, I can't remember the new legendary Pokemon's names XD. All I can think is that one sounds like a name off of Skyrim, honestly.)
F is for Feebas. Bane of my existence.

(Lmao. XD Isn't that like the only new legendary or something? All I can think of is the new mewtwo and zygaarde...)
why do you not like feebas. XD

G is for Golom. O:

(Xerneas as well. I had Pokemon X, so he was my legendary. Big mystical deer dude! Because I never could find one on Ruby and Sapphire XD)
H is for Heracross

(ahh yes Xerneas and Yveltal. XD mine had a bad nature when i got it ._. -dissapointed-)
(Id be happy to get a milotic myself x3 its quite an interesting pokemon x3)

I is for Igglybuff~

(I never use mine, so I really don't pay attention XD.)
J is for Jigglypuff.

(pshh use et. 8l )
K is for Kingdra. 8D

(But I have a Psychic Pokemon instead of a Fairy XD))
L is for Lampent

M is for Mylotic. <3

N is for Nidoran. x3

O is for Oddish.