The sole survior of the Krios tribe, inhabitants of the forests of Greenak, now known as the Tomb of the giant, Poka is a 14 year old who's dream is to become a Hero one day. As to how he is the sole survivor will be exlained when i releae episodes. Since he is the last survivor of his tribe, he is given the the Shell of thorny Spines , a back armor that allows him to transform into a Hedgehog-like Gaurdian Beast. His weapon includes a specially crafted Krios boomerang that multiplies when thrown.
The problem is Poka hasn't got the experience to use it which often creates a number of blunders usually getting him into trouble. His constant sneezing, allows his best form to trigger on & off & throw his spikes randomly. But all in all., Poka posseses goodness & often provides a bit of humor in the lives of our heroes.
As to why he is named the Giant killer, I assure you time will tell.