Advertisements Spoiler: Spoiler Books 6-on Alex is a minor presence in Book 6, Babylon's Ashes. I still wish they recast the character. (we've seen hints of the Alex/Bobbie best friends bond this season, and that's a big thing in the later books.) The fanthink predicts the Tycho Station security chief Bull de Baka will take the Rocinante's wheel in S6. They can pull a Discovery and recast Alex Kamar with Bull's actor: Jose Zuniga. Get the Texas drawl and you're in!