Clefairy, it's so sweet it makes me uncontrollably smile.

Pachirisu

Giratina

Pichu

I don't know about #1 but Popplio is pretty up there.

Bro just said Giratina

And I also like Pichu

Drifloon if you can get past the whole kidnapping children part

Joltix and meltan (Also Rowlet).

Syhamin the hedgehog one. not the flying one.

Siliconda