This is Kazu a traveling partner with Ace and Brook.
Two words describe this beautiful border collie

Gay Pervert.

He has perverted thoughts for Ace, Oh no, he's not looking for a love, love relationship.
He's looking for a...well...bang bang... relationship...

THO NOT TO THREAT, he is unlike Mineta. He is likable. He is a very funny and outgoing pupper, he trusts others easily and is a very sensitive doggo.