“Junpei is usually portrayed as goofy, perverted, immature and upbeat. He fancies himself a ladies' man and frequently tries to hit on girls, with little to no success. Despite this, he is capable of being kind and caring, and he often cracks jokes and calls people "dude" to make them feel better."

"Later, it is revealed that Junpei's "class clown" persona is largely a facade to hide his deep insecurities; as far as he's concerned, fighting is the only thing he's ever been good at, and he hates that there's someone better than him at even that (the protagonist).”

Voice Example

https://youtu.be/gXRq5_9sRkQ?si=jgNrMbfI_B9EjKen