Well, in some fanfictions, Starscream from Transformers Armada might find himself in the RWBY world. He could be intrigued by the Dust, which is a unique power source in RWBY. He might try to steal it or use it to upgrade himself. The RWBY characters, on the other hand, would see him as a strange and powerful new enemy. They would have to figure out his weaknesses, which are different from the Grimm they usually face. And the Armada's presence could mean a whole new level of threat to the RWBY world, as they are used to dealing with smaller - scale threats compared to the massive forces in Transformers.
Starscream could be a villain in the RWBY fanfic universe. His ambition and cunning nature would make him a great antagonist. He could try to take over the various kingdoms in Remnant, using his advanced technology and combat skills.
Well, one interesting crossover could be in terms of the technology. Transformers have highly advanced tech, and in RWBY, there's also a focus on unique weaponry and tech like Crescent Rose. Maybe the RWBY characters could learn from the Transformers about more efficient energy sources for their weapons. Another aspect could be the teamwork. Both RWBY teams and the Autobots/Decepticons have to work together in their own ways. The RWBY characters might be inspired by the Transformers' large - scale battles and adapt their combat strategies.
A fanfiction could have Starscream arriving in the RWBY universe. Maybe he could be mistaken for some kind of new Grimm at first. His mechanical nature would be a huge contrast to the organic and magic - based world of RWBY. He might try to take over or find a way to use the Dust in RWBY for his own purposes, seeing it as a valuable resource similar to Energon in his own world.
I'm not sure if there is a specific fanfiction directly combining Transformers, Starscream, and RWBY. However, you could try searching on popular fanfiction websites like Archive of Our Own (AO3) or FanFiction.net. Maybe there are some creative writers out there who have mashed up these different universes in an interesting way.
One interesting aspect could be the contrast in magic systems. In Harry Potter, magic is more about spells and potions, while Starscream has his own set of technological 'powers' in the Transformers universe. A crossover might explore how they interact. For example, how would Starscream react to a wizard's ability to apparate? And how would a wizard deal with Starscream's flight and weaponry capabilities.
One possible fanfiction could be about Starscream trying to form an alliance with the Combaticons. Starscream, being his ambitious self, might see the power of the Combaticons as a means to gain more control in the Decepticon ranks. He could approach them with a plan to overthrow Megatron, but the Combaticons would be hesitant at first. After all, they have their own loyalty issues. In this story, Starscream would have to use his wits to convince them that his plan is worth following.
The unique combination of different universes. When RWBY crosses over with other shows or games, it brings together different powers, personalities, and storylines. For instance, if RWBY crosses with Star Wars, the contrast between the high - tech of Star Wars and the more medieval - like setting of RWBY creates an exciting blend. Different fighting styles also add to the intrigue. A RWBY character using their weapon against a Star Wars lightsaber - wielder would be really cool.
The sparkling could be a prophesied figure in Cybertronian lore. Starscream, believing in the prophecy, decides to side with the sparkling instead of his usual self - centered ways. He has to protect the sparkling from both Autobots and Decepticons who don't believe in the prophecy or want to use the sparkling for their own ends. This plot would involve a lot of action and moral dilemmas for Starscream.
There's a fanfiction called 'Starscream's Ascent'. In this story, Starscream discovers a hidden power within himself. The author does a wonderful job of portraying his complex personality as he tries to use this new power to gain respect among the Decepticons. It's full of action and his scheming, which is typical of Starscream.
In a fanfiction, Starscream might be in a situation where he has to protect a sparkling from other Decepticons who see it as a threat or a nuisance. Starscream, known for his self - serving nature, could struggle between his usual motives and this newfound sense of responsibility towards the sparkling. This internal conflict could lead to a lot of character development for him.