The last Guardian went to Earth foundKyle outside a bar and randomly gave him the ring.
Eh, there's been debate about that. I'm a "Hal" fan through and through, but I recall debates being that Ganthet's "You'll do" bit to Kyle wasn't like "Eh, here's some random guy... you'll do"
But more of a response of after choosing who he felt would work, he was either not 100% thrilled with his choice or was just in a bad mood. Choosing a human was probably a sour spot with him: a human destroyed the Corp, but humans had recently been exceedingly exceptional ring slingers.
Granted, it's been a while since I've read that issue so I can't comment either way. I just remember the "you'll do" line being something the "Hal" fans would throw at the "Kyle" fans and thus an argument would start.