'Join Kai Masters, Border Guard, as he battles beasts to keep Earth safe. The first eight stories in the series.' (Publication summary)
High-tech border guard and beast battler
Things have changed in Beastium. There are new beasts. Combo beasts.
Will Kai and his Jet-Charge be able to stop the storm beast?' (Publication summary)
'When dead fish covered in glowing moss wash up on the beach, Kai knows it's time for battle. Was Kai right to choose the Torpedo Bowshot to battle the water beast? Will it work against toxic jellyfish? Will it be enough to take on a wave attack?' (Publication summary)