His loyalty would play a big part. He'd be dedicated to protecting his comrades in the Gundam world, just like he did in the Naruto world. And his sense of humor might make the usually serious Gundam battles a bit more light - hearted. For instance, he might crack jokes over the communication system during a battle. Also, his impulsive nature could lead to some interesting situations. He might rush into battles without fully thinking through the strategy, but then use his quick - thinking skills to get out of tough spots.
Naruto's energetic personality would likely make him a very active pilot. He'd be constantly looking for ways to engage the enemy and wouldn't be afraid to take risks.
Naruto's growth - oriented personality would mean he'd constantly be trying to improve his Gundam piloting skills. He'd learn from his mistakes and from the more experienced pilots around him. His positive attitude would also be contagious among the crew. He'd be the one to boost morale when things get tough. His big - heartedness could lead him to try and find non - violent solutions to problems, even in the middle of a battle. For example, he might try to talk to the enemy first and only use the Gundam's weapons as a last resort. This would add a unique dynamic to the Gundam - related battles and storylines in the fanfiction.