The dewback with stormtrooper is from Galoob's Action Fleet Battle Pack #4 (Galactic Hunters) and the ronto with Jawa is from Battle Pack #10 (Mos Eisley Spaceport). Both are reasonably close to SWMB scale.

Rancor and Krayt Dragon:

The rancor is from Galoob's Action Fleet series, and is appropriately big and scary next to a SWMB figure. The krayt dragon is actually 'Grovel' from the 'Spat and Grovel' pack, part of the Marvel's Most Wanted action figure series by Toy Biz (Toys R Us put loads of these on sale for under $3 in early 1999). Grovel has a short pug face with a big lower jaw and looks like he could be an evolutionary offshoot from the same line that produced the rancor. He resembles the size and appearance of the krayt dragon sketch in Starlog's Technical Journal for Tatooine, and he seems to fit the SWMB stats which indicate the krayt dragon is stronger and slower than the rancor, with a stronger bite but weaker claw attack.

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