In the 'tmnt i meets the turtles 3 fanfiction', it could be that a strange time - space anomaly causes the two groups of Turtles to meet. The Turtles from the first TMNT might be shocked by the more advanced technology or different look of the Turtles from the third series. They would need to overcome their initial differences and confusion. The fanfiction could explore how they communicate, share their knowledge of fighting the Foot Clan and other villains, and ultimately create a new bond that helps them save their combined world from a new and dangerous threat.
The main characters in this 'tmnt i meets the turtles 3 fanfiction' would not only be the Turtles. Their enemies like Shredder could also play a major role. Maybe in this fan - made story, Shredder has a new evil plan that involves both sets of Turtles. And also, their allies such as April O'Neil might be involved too. April could be the one who first discovers the strange occurrence that brings the two groups of Turtles together and helps them communicate and work towards a common goal.
The main characters are obviously April and Tang Shen. April, the human friend of the Teenage Mutant Ninja Turtles, is often involved in their adventures. Tang Shen, on the other hand, has a connection to the turtles' past, especially through Splinter. Their meeting in the fanfiction would bring two different worlds together, April representing the modern world and Tang Shen representing the past and the more traditional ninja world.
One possible plot could be that April, while on one of her reporting adventures, stumbles upon Tang Shen in a hidden part of the city. Tang Shen, being a bit wary at first, eventually warms up to April. They start sharing stories about the turtles. April tells Tang Shen about the modern-day turtles she knows, and Tang Shen shares her memories of Splinter when he was still a young ninja. This encounter could lead to a new alliance between them to protect the city or the turtles from a new emerging threat.
Perhaps the mutagen that created the Turtles has some strange reaction when exposed to the Dragon Balls' energy. This could lead to new powers for the Turtles and a whole adventure about controlling and understanding these powers while also dealing with the Dragon Ball Z characters' reactions to them. For example, Vegeta might be initially suspicious and see the Turtles as a threat to his power status.
Leonardo and Piccolo could form an alliance. Leonardo is a natural leader and very disciplined, which Piccolo can respect. Piccolo, with his strategic mind and powerful abilities, would be a great ally for Leonardo in battles. They could work together to plan attacks against their enemies, like when facing a powerful villain that has both ninja - like stealth and superhuman strength.
In the traditional TMNT universe, male turtles like Leo getting pregnant goes against the biological norms of the franchise. However, in fanfiction, anything can be reimagined. Some fanfiction might use magic or some out - of - the - box concepts to make such a situation possible, but it's not part of the official TMNT lore.
In this fanfiction, the TMNT might escape by first observing their captors' routines. If the Shredder has minions guarding them, they could wait for a shift change or a moment of inattention. Donatello might be able to hack into any security systems if there are any. Also, they could use their knowledge of the sewers to find a way out. Maybe there's a hidden passage that the Shredder doesn't know about. And of course, their ninja skills would come in handy for sneaking past guards and making a quick getaway.