A common theme is rivalry. They are both quite different characters, so their clashing personalities can lead to some intense rivalries in fanfiction. Another is cooperation, as they might find themselves in situations where they have to work together despite their differences.
Another option is that it could be an existing character from their respective universes who has turned against them. For example, one of Lord Boxman's former robots that has gained sentience and now wants to destroy him and anyone associated with him, including Professor Venomous.
One idea could be that they team up to take over the city in a rather comical way. Maybe Lord Boxman has some new inventions and Professor Venomous provides the muscle with his powers. They start by targeting all the hero - related establishments first.
One way to find great 'professor venomous x lord boxman fanfiction' is to ask in relevant fandom forums. Fans there often share their favorite reads. Maybe there are some stories where they are forced to work together in a strange situation and end up learning more about each other.
Power dynamics is another theme that might show up. Given their different abilities and roles, fanfictions could delve into how they balance power between them, whether it's in a fight or in their day - to - day interactions. For instance, how does Boxman's more brute - force approach interact with Venomous's more calculated and venom - based powers?
You can try looking on fanfiction websites like Archive of Our Own (AO3) or FanFiction.net. These platforms often have a wide variety of fan - created works, including ones related to Boxman and Venomous.
It could be a powerful superhero who is determined to stop Boxman and Venomous. Maybe a hero from another dimension who has heard of their evil deeds and comes to put an end to their plans.
Often, there might be themes of power dynamics. Given that Boxman and Venomous are both characters with different levels of power in the original work, fanfics might play around with who has more influence in their relationship. There could also be themes of redemption or change, where one character might cause the other to see things differently and grow as a result. Additionally, adventure - themed plots could be common as they are characters from an action - based show, so fanfics may send them on new quests or challenges together.
One idea could be that Boxman and Venomous team up to take over the city in a more comical way. Maybe they have a series of misadventures while trying to outwit the heroes. For example, they could accidentally create a monster that they can't control.