You'll want to use the trigger bag_over_head!
There's 2 LORA here:
v1: trained on mostly girls with bags on their head
v2: trained on same data as v1 + a bunch of pictures of Faust from Guilty Gear
I didn't use any captions other than bag_over_head, so you'll have to describe Faust to summon him.
You might want to toss in paper bag for good measure.
If you liked this LORA, please consider following me on Twitter and Pixiv (to see latest in LORA news and some cool generations), or subscribing on Patreon.