my favorite types are water, electric, and fairy, so maybe a fusion between two of the pokemon down below might look good?
some water type ideas:
pyukumuku
totodile
chinchou
lantern
popplio
sobble
panpour
some electric type ideas:
togedemaru
mareep
pincurchin
joltik
plusle
minun
some fairy type ideas:
mimikyu
alcremie
igglybuff
milcery
mime jr