Need Bionicle help!

Can anyone point me in the right direction?  My nephew mentioned a couple of
Bionicles he wanted for the holidays, but didn't give us their names, he
just described them. He said he wanted:

"The Gold one"
"The Evil black one"

Does anyone know which Bionicles he's referring to?

Also, can anyone suggest some more unusual Bionicle gifts, such as things
you wouldn't normally find at a Wal-mart or similar?

Thanks much!