Based on the available information, the character Kobayashi appears in the film adaptation of "Penguin Highway". Identified as male with black hair, he is also referred to as Kobayashi-kun. English voice actor Winston Bromhead provides the character's voice, while Michiyo Murase portrays Kobayashi in the film. No further character details regarding background, role, relationships, or significance within the narrative are documented in the searched sources.