Walka, the Battle Bot

Walka has a heart of steal and a will of iron. He's a land support rover and the most trusted companion to Sparky. Walka has a very advanced AI which gives him a human personality. He only does what his master tells him, he will listen to no one else unless they have his remote controller. Walka is somewhat of a hoarder who keeps all kinds of nic naks and would prefer to be left alone. Fighting is his favorite thing to do, he has incredible strength and is armed with a 50-caliber machine gun in his chest.