Ruby would be a great character to feature. Her energetic and adventurous nature would make her reactions to the strange Portal world really interesting. She'd probably be eager to explore and figure out how the portals work.
In my opinion, Jaune Arc could be a really good character to feature. He's always trying to prove himself and a new, powerful human weapon could be the key to his growth as a warrior. The weapon could have some sort of self - training or guiding mechanism that helps him become a better fighter. Oscar Pine is another one. Since he's the new host of Ozpin, a human weapon could play a role in his journey. Maybe it's a weapon that can help him better control Ozpin's power or it could be a weapon that was once used by Ozpin in a past life.
Yang Xiao Long is another excellent option. Given her brawler - like fighting style that already utilizes her gauntlets, fanfiction could explore even more powerful versions of her gauntlets. And adding greaves could give her new ways to attack and defend, especially in close - quarters combat. For example, she could use the greaves to perform powerful kicks in combination with her punches from the gauntlets.
Ruby is a great choice. Her innocent and energetic personality can be really interesting when combined with an animal form or when interacting with animals. Blake would also be good as she has a connection to the Faunus, which are part - animal. You can explore her dual nature further in an animal - themed fanfic. Weiss could be portrayed as having a special bond with a magical ice - based animal, like a snow leopard.
Definitely Yang. Her strength and fearless attitude would be really interesting in a gaming context. She could take on powerful opponents head - on. Weiss, too. Her strategic mind and combat skills would make her a valuable player in any game within the fanfic. Also, her ability to use Dust could add an extra layer of complexity to the game scenarios.
Blake is also a favored character to feature. Her stealth and combat skills, along with her complex backstory, can be well - integrated into stories involving Ultraman. She could use her skills to support Ultraman in battles against common enemies, or they could have some really deep conversations about justice and equality while fighting side by side.
Yang is also well - liked. Her strength in combat and her fiery personality can create interesting dynamics in a multi - player fanfiction. She can be both a tough fighter and a great source of comic relief.
Beast Boy from Titans is also a common character in these fanfictions. His ability to transform into different animals can create some really cool and unique scenarios when combined with the RWBY universe. For example, he could transform into a Grimm - like creature for a strategic advantage in a fight.
In RWBY, Ruby Rose is often a popular choice. Her innocent yet powerful nature can create interesting storylines when she's placed in the Crysis world. Her scythe - wielding skills and speed can be a great asset against the threats in Crysis. In Crysis, Prophet is a common pick. His experience and connection to the nanosuit technology can make for some exciting interactions with the RWBY characters. For example, he could help them understand and use the technology if they end up in his world.
Ruby is definitely a popular choice. Her leadership skills and powerful scythe -slash -gun weapon make her a dynamic character to write about. Also, her determination and growth throughout the series give a lot of material for fanfiction writers.
Ruby Rose is often a popular choice. Her energetic and determined personality fits well in the action - packed Borderlands setting. Yang Xiao Long is also popular. Her strength and brawler - like fighting style can be easily translated into the Borderlands' combat system. Blake Belladonna is another one. Her stealth and agility can add an interesting dynamic to the fanfiction.