Definitely Android 18. She has a unique personality among the Dragon Ball characters. A moonlit stroll for her could involve her thinking about her relationship with Krillin, and how she has changed from being a cold - hearted android to someone who cares deeply for her family. It would also be interesting to explore how she views the world now compared to when she was first created.
Yamcha could be an interesting choice. He often gets overlooked in the grand scheme of things in Dragon Ball. In a moonlit stroll scenario, he could be reminiscing about his days as a desert bandit, and how his life has taken such a different turn since getting involved with the Z - fighters. He might also be feeling a bit of envy towards the more powerful characters, but still find his own purpose during this solitary walk.
I think Gohan would be very interesting. He's a complex character with his Saiyan heritage and human upbringing. During a moonlit stroll, he could be reflecting on how he balances his academic life with his responsibilities as a Z - fighter. He might also be thinking about his father's legacy and how he can live up to it in his own way.
One possible plot could be Goku and Vegeta taking a moonlit stroll together, initially in silence as they are both lost in their thoughts about their latest battles and power-ups. Then, they start to have a deep conversation about their families and how their lives have changed since they first met. This could lead to them realizing they have more in common than they thought, strengthening their unspoken bond.
I think Ruby would be a great choice. Her innocence and determination in RWBY could be an interesting contrast to the often more battle - hardened and power - hungry characters in Dragon Ball. She could learn a lot from them about power and also teach them about the importance of friendship and teamwork in a different way.
Gohan could be really interesting. He has so much untapped potential. In a tournament, he could finally fully embrace his Saiyan heritage and show off new forms or techniques that we haven't seen before. He also has the added drama of trying to balance his academic life with his fighting responsibilities.
Beerus would also be fascinating. He's a powerful deity in the Super universe. In a crossover, he would be intrigued by the different Saiyan forms from GT. His reactions to the Super Saiyan 4 and how he would interact with the characters from GT, especially when they might accidentally disrupt his peace or his search for good food, could create some really humorous and interesting storylines.
I think Ladybug would be the most interesting. At the masquerade ball, she has to maintain her secret identity while also enjoying the event. She might be on the lookout for any signs of trouble, all while looking elegant in her ballgown and mask. It would be exciting to see how she interacts with other characters without giving away who she really is.
However, Goku is also a strong contender. His Super Saiyan forms give him incredible power boosts. If Naruto were in the Dragon Ball universe, Goku's experience with different power - ups and his intense training regime would make him a very difficult opponent to beat. But Naruto's unpredictable ninja skills might give Goku a run for his money.
Well, Ruby Rose has the potential to be very powerful. Her silver - eyed warrior abilities are quite strong. But compared to someone like Vegeta, she might seem less powerful at first. Vegeta has years of training and combat experience, and his ability to control his ki is remarkable. However, if Ruby were to fully master her powers and combine them with some of the techniques from Dragon Ball Z, she could become a very formidable opponent.
That's a tough one. While Goku has the ability to reach incredible power levels like Super Saiyan God and Ultra Instinct, Naruto also has some really powerful forms. His Six Paths Sage Mode gives him a huge boost. But if we consider the fact that Goku can keep increasing his power almost infinitely, he would probably be the most powerful. However, if Naruto were to somehow combine his chakra with the Dragon Balls' power, that could change things completely.
Vegeta could also be very interesting. His pride and determination would add a lot of drama. He might initially be reluctant to participate in a field trip but would end up being the one who pushes everyone to be better, especially if there's a chance to prove his strength against new foes or in new training scenarios.
Vegeta is also highly popular. Writers often like to write about his pride as a Saiyan and how he overcomes his own ego to become a better fighter and a better person. His relationship with Bulma and his rivalry - turned - friendship with Goku are rich areas to explore in fanfiction.