Woah! You were quick to find them all, even the Cobalt sketch and I was on my way to tell you. I hope you like them? BTW, I might want to find more of them like Chitil's sister or the other inklings. BTW, did you see the ones I did of Omega, Spider, and Inspector Heavy?
Oh... That's right, the mention box thingy. You should check out my gallery. I got more solo drawn OC's plus an experimental sketch when I drawn a bunch of inklings in them with Merasmus at the top center.