Yes, there are quite a few. You can start by looking on fanfiction websites like Archive of Our Own. Some fanfictions might explore Bell's fear in relation to his complex relationship with Hestia, perhaps due to her over - protectiveness or his own insecurities in the face of her expectations.
You can try some fanfiction websites like Archive of Our Own (AO3). It has a large collection of fan - made stories related to Danmachi. Another option could be FanFiction.net, which also hosts a wide variety of fanfiction works including those for Danmachi.
Another way is to join Danmachi fan groups on social media platforms like Facebook. Members often share links to their favorite fanfiction pieces. They might also discuss different fanfiction works, which can help you discover some really good ones. You can also interact with other fans and ask for recommendations directly.
Gilgamesh can be portrayed as a powerful and haughty figure. He could walk around the world of Danmachi with an air of superiority, looking down on the 'lesser' adventurers. His flamboyant style and his love for grandeur can be emphasized, like always wearing the most elaborate and expensive armor.
One popular trope is the 'fish - out - of - water' scenario. For example, Percy might find himself in the world of Danmachi and have to adapt to its different rules and cultures. Another common trope is the power - up trope. Characters from Percy Jackson's world might gain new abilities in the Danmachi setting or vice versa.
One great place to find Percy Jackson and Danmachi fanfiction is on fanfiction.net. It has a large collection of stories that combine elements from both universes. Another option is Archive of Our Own (AO3). There, you can use the search function to specifically look for crossovers between the two. Many talented writers post their work there.