Hellenism

Beings claiming that the Brothers of Grimm, themselves gave them powers to better mankind are widely worshipped throughout Remnant. Their powers were unlike any semblance ever seen, with that backing up their claims, people easily believed them. They are praised all throughout Remnant but many people of Mitstal have devoted their lives to these “Gods”

Followers
Followers build temples to honor each god, no matter how big or elaborate the temple. Priests were assisted by attendants. People bring offerings, usually food, to the temples when they pray. This food was collected and brought to where these Gods stay. Sacred sites are also located all over the place. Sites held a simple altar at which the followers could pray. Some sacred sites became so popular, for whatever reason, that a temple was built on the site. Followers hold festivals to honor their gods. Typically, each festival would include a parade to a temple, then a sacrifice - an animal of the same sex as the god being worshiped - and then a feast.