Awww yeah! That's what I'm talking about! You should probably add a white outline for his left (our right) arm, since it looks as if it's smaller than his other one.
Yes, there are. If I recall correctly, there's Sheba, Vess, Praxis, Theory, Kasandra, and Herald. You can pretty much get all of them by this point.
Sheba and Kasandra require almost no time to obtain. In Sheba's case, you can buy her core crystal in Torigoth, but it costs a pretty penny if you don't salvage often. I don't remember if you need to trigger an event to make it purchasable though.
As for Kasandra, just go to Mor Ardain and go to the salvaging point near the Chansagh Wastes in the lower level with a normal cylinder and fight a Gluttonous Marrin. After you kill it, its chess gives you the "Lucky Core Crystal".
You can trigger events for Praxis and Theory by purchasing "Core Crystal Hunters" info from news vendors, and walking through the same area in Torigoth where you first encounter Brighid. It's at that point where you start doing A-to-B types objectives. The rest is just using the wiki at this point.
Oh, and I supposed Vess is pretty easy to get too, but again, fetch-quest–type stuff.