Walker is a eldest Snuko which means unlike others he is alot stronger, physically fit and taller
Snukos are anthropomorphic yellow rabbits that have military instincts and have been bred and sent to war (100% of their species serve the military)

Walkers left eye doesn't work so it always looks down, and his body is covered in scars and his chest has bullet scars
The grim appearance shows his dominance over the other Snukos
And has tank like strength
Snukos also eat their fallen comrades 