Me and my brother have this thing; we name our rivals each other.

So I named mine 'Brad'.

So name him after a sibling.

You know the answer to this.

~EW~

I name him either "???" or the name of a kid I hated in elementary school.

Or the classic "fart-head". Can't go wrong with that.

I named mine Silver.

And in Diamond I named him "retard", so mom was like "my little retard".

Go with Silver

I always named mine extremely explicit words.

Buddy!

with the exclamation point

or Pal!

Babe!

Lover.

something obscene.

or Gary Oak.

I named mine Silver.

Kohaku

Name him whatever you named your character so you can turn a child's game into an intense psychological examination of mankind's internal conflicts!

Or Silver. Silver works, too.

Name him Jim.

And then steal his desk to form command central, a.k.a...Megadesk.

I called myself something extremely obscene once, and hilarity ensued.

I never have a fixed name for my Rival.

I've named both Pearl and Silver "Cupcake."

~Bunda