Only the single "blind bags" have been found at brick and mortar retail so far and it turns out that those include the rarest figures, since some characters are only found through blind bags. There is a way to figure out which character is in the bling bag since there is an number scratched into the bottom right of the back of the card. You can see numbers 16 and 9 below which correspond to Slobber Rock and S.A. Cheez, as you can tell from the list below, courtesy of tformers.com.
1 - Stinkasaurus Rex
2 - Scrub-A-Dub
3 - Nobeeoh
4 - Cocoa Crazy
5 - Sippy Slurps
6 - Remorsel
7 - Skillz Punk
8 - Fomo
9 - S.A. Cheez
10 - S'up Dawg
11 - Twerple Bubble
12 - Spud Muffin
13 - Rootwing
14 - Venus Frogtrap
15 - Fun Gus
16 - Slobber Rock
17 - Frostferatu
18 - Dimlit
19 - Professor Wellread
20 - Snippy Snappy
21 - Totes Magotes
22 - Cranks
23 - Batsby
24 - Kidd Klobber