Honestly, you'd be better off using it as a Char-Y.
Slowbro has more physical bulk, while Slowking has more special bulk. Both have situations where one is more useful than the other.
Slowking has Nasty Plot too. For the lulz.
Fagonist, I already have a good Timid one and I combo it with Chompy for EQ spamming :P
Dragon Claw / DD / Flare Blitz / Overheat or something? I'd use Dragon Rush like a real man but its an egg move it doesn't have :/
EDIT: Damn, no Dragon Dance, eggy move it doesn't have. Yeah, probably Megazard-Y then