These are the "B-Side versions" of Kubix and KubaBurza, and these have some changes comparing to normal variants :

B-Kubix is called here Andrew "Kubix" Frederick Thunder (Kubix is his nickname, he has here no 3rd name). He's 25 years old, has blue eyes, blond hair, and wears more orange clothing (I'm doing his sprites in color so soon you'll see it).

B-KubaBurza is... Also called KubaBurza, but this time he's 21 years old and is in sort of a mafia. This organisation has a disguise of magicians, so KB's codename is "Black Trickster". Here KB is wearing more black clothes, and his bowtie gets replaced by a tie. He's also more arrogant and mature than normal KB.