No, it's not likely to be a popular story. While the Battletoads franchise has its fans, the 'dark queen battletoads femdom story' seems like a very specific and perhaps not so widely known take on the characters. It might be something that only a small subset of fans who are interested in this particular type of story would be aware of.
One way could be that the Battletoads are from a different dimension and they end up in the world of Pawn Stars. They need to pawn some of their items to get resources to get back to their own world. For example, they might pawn their special amulets or enchanted weapons.
The Battletoads are known for their action - packed adventures. Pawn Stars is famous for its unique items that come into the pawn shop. In a combined story, imagine the Battletoads enter the Pawn Stars shop. They could be a bit out of place in the normal pawn shop setting. They might try to sell some of their in - game treasures like the golden coins they've collected or the rare power - up items. The Pawn Stars crew would have to use their knowledge and bargaining skills to deal with these unusual customers.
I'm not entirely sure about a specific 'Pawn Stars Battletoads' story. Pawn Stars is a show about a pawn shop, and Battletoads is a video game. Maybe there could be a situation where someone tries to pawn Battletoads merchandise in the Pawn Stars shop. But without more context, it's hard to say for sure.
I'm not very familiar with this specific 'dark queen battletoads femdom story'. It might be a very niche or fan - created story within the Battletoads universe. Maybe it involves the Dark Queen having a dominant role in some kind of plot or encounter related to the Battletoads.
Power struggles are also a frequent theme. The Dark Queen is constantly vying for more power, and in fanfiction, this can be explored in different ways. For example, she might make deals with other villains or discover ancient powers. And sometimes, fanfictions will show the internal power struggles within her own ranks, as her minions might have their own ambitions that conflict with hers.
One idea could be exploring the Dark Queen's backstory. Maybe she wasn't always evil and something in her past turned her that way. For example, she could have been betrayed by her own kind which led to her thirst for power.
Some gaming forums also have sections for fan-created content. Check out the official Battletoads forums if they exist, or other general gaming forums where fans of the game gather. They might have threads about the Dark Queen fanfiction.
Set the fanfic in an alternate universe. You could change the rules of the Battletoads world, like the Dark Queen rules a more technological - based empire instead of a magical one. This would allow for new and different storylines.