Castellan and Wolf Underling Familiars

Castellan is 1.6x drop, same as the Big Spider and Mutant Pig, whereas Wolf Underling is 2x, you can tell by the familiar description:

 Spoiler

For 2x drop rate, it doesn't mention increasing the drop rate of mesos, it's purely increasing item drop rate, but for 1.6x drop:





It mentions drop rate of both items and meso.

Ninja'd twice, but I posted pictures