I know he has Protean. I meant that its movepool up to lvl20 limits you to Water, Ghost and Normal.
I'd suggest you consider also Drapion, Shiftry, Scrafty and Houndoom after a while.
And when you reach the routes, you'll get a Bisharp (and a Sableye before that)
Water is hard at first, but then you have soooo many options (if you played from ep10 you also have gyarados early on)