As Goku unleashes his full power and transforms into a Super Saiyan for the first time, the Sonic characters are left in awe and confusion. They have never seen anything like this before; it's a completely foreign concept to them. Sonic, being the first to react, is taken aback by Goku's sudden transformation. He notices the drastic change in Goku's appearance - his spiky hair standing on end, his body radiating with energy, and his now glowing green eyes. Sonic, being a hero himself, is impressed by Goku's newfound power but also curious about its origin. Tails, as the analytical genius that he is, quickly realizes that Goku's transformation is something beyond their comprehension. He tries to study it, taking notes and scanning Goku's energy levels. Tails is fascinated by the fact that Goku's eyes turned green, unlike any of the transformations they have encountered in their own world. Knuckles, known for his brute strength, is both amazed and slightly envious of Goku's transformation. He acknowledges the incredible power surging through Goku and wonders if there is a way for him to achieve a similar transformation in his own abilities. Amy, being a optimistic and supportive friend, cheers on Goku for his newfound strength. She doesn't fully understand the significance of Goku's transformation, but she is excited to see him gaining power to protect his loved ones, just like Sonic would do. Meanwhile, Dr. Eggman, the conniving villain, sees Goku's transformation as a potential threat to his own evil plans. He immediately schemes to obtain this new power for himself, seeing it as a way to finally defeat Sonic and conquer the world. As the Sonic characters witness Goku's first Super Saiyan transformation, they are left with many questions and a newfound respect for the Saiyan warrior. They may not fully understand the concept of Saiyan transformations, but it intrigues them and opens up a whole new world of possibilities in their own universe.