Most of our costume library is taken from Scratch (with permission, of course; they're freely licensed). (Alonzo is a special case; Gobo is not freely licensed, but we have special permission for our modified version.) We've been thinking for a while now that we should have some costumes of our own, and here's the first batch. In order to fit them all on the stage, they're at 25% size in this picture, so you can use them at much higher resolution than it seems here.
These beautiful watercolors were painted for us by Meghan Taylor, the writer and artist of the webcomic Prophecy of the Circle. Derec, Jahrd, and Jamet are characters from that webcomic, and they are licensed to us only for use in Snap! projects. The even more beautiful full-size originals are at https://people.eecs.berkeley.edu/~bh/Meghan-big if you'd like to see them. Tad the turtle isn't one of her characters, so I guess you can use those pictures however you like. The one in which he's drawing a square is, of course, a reference to Logo, which is sort of the Snap! of my youth. :~)
I should explain a little about Jamet. Besides being a cute and engaging young person, like the others, he's a spy, from the mysterious city to the south, which we haven't visited yet in the story. They have much higher technology than the other tikedi settlements (that's what these people are called, as opposed to the tekk, who seem to be dragons). This is why in his sixth picture, "jamet f," he's peering from behind a wall. The wall is a separate costume, so you can assign it to a separate sprite and have Jamet come out to the front of the wall if the coast is clear. (Or, of course, use your own wall.) In the first two pictures, a and b, you can see a piece of the mysterious Harangin technology in action.
Coming next: Derec's twin sister Sarron. Maybe not before v8.0, though.
It's a great webcomic, interesting as well as beautiful. Go read it!
Oh, here's Meghan's take on Alonzo: