Shadows

Lucas, Lance, or Mr. Badass. XD

Destroyer of worlds... XD

How about... Lancelot

Joshua, Leonard, Dewott, or Zekrom jr.

Go with Ryu for a Street Fighter reference.

Mister Beefy

Adam, Randal or Cris P. Lettuce

You should always name your Riolu Aura. =w=

Basil.

I named mine "Anubis" since that's the Egyptian God that it's based on and I think it's pretty cool xD

Skywalker.

So when it evolves, it's Lucario Skywalker.

Heh, a Riolu. That makes me think of the name Ryoga or Rio (as in Shark or his awesome sister from Zexal).