Lego Technic Hailfire Droid Robot, slightly modified from a MOC I saw on Youtube. Added the top frame to even out the roll and added some pins to the battery pack as
LEGO Star Wars: Hailfire Droid (4481) for sale online | eBay
LEGO Star Wars: Hailfire Droid (4481) for sale online | eBay
Hailfire Droid™ 75085 | Star Wars™ | Buy online at the Official LEGO® Shop GB
Hailfire Droid - Brick Fanatics
LEGO 4481 Technic Hailfire Droid Set Parts Inventory and Instructions - LEGO Reference Guide
LEGO 4481 Technic Hailfire Droid Set Parts Inventory and Instructions - LEGO Reference Guide
Hailfire Droid™ 75085 | Star Wars™ | Buy online at the Official LEGO® Shop GB
Behold, my colour-swapped 4481 Hailfire Droid! : r/legotechnic
LEGO Star Wars: Hailfire Droid (4481) for sale online | eBay