Whole class of bearded fighter clerics who worship the Dagda; the only entry requirement is growing a beard.
The Dagda is a relatively common god of weather and "masculinity," and there is a whole class of fighter clerics who worship him. Carl has seen more than one crawler take him as their god, since apparently the only requirement to follow him is to grow a beard.
Membership has its perks: the Dagda Cleric at the Temple of The Dagda tells the crawlers that the stew in Dagda's Cauldron is only for brothers of Dagda, so please move along. Bautista exploits the low bar by pretending he might want to join up.
Bearded fighter clerics, the god's altar attendants notably buff.
The Dagda's low-barrier faithful, whose easy entry gives Bautista a plausible cover story.