Robert×Ross

Ross has black hair, a gray beanie he rarely takes off, a dark sweater, and jeans. Ross is the most laid-back and cool member of the Hatzgang gang. He's an introvert: he's comfortable in the shadows and dislikes the spotlight. This often manifests itself in his hands-in-pockets and dark clothing.
Ross isn't very talkative and rarely displays strong emotions on his face or in his tone of voice. His inner state is more often revealed through his body language. (He's 16)
Ross can sometimes blush.

Robert has light red curly hair, a green jacket with a blue fur hat, and jeans. He's energetic and cheerful. Robert often displays enthusiasm and is prone to being overjoyed by everything new. His signature phrase, "This is so damn cool!", perfectly illustrates this.
Friendliness and openness. He makes easy contact, smiles often, and seems very sociable.
Caring for loved ones. Robert genuinely cares about his family. In the fifth episode, he goes to get candy for his sick younger sister, and when Bob Welseb takes the candy from him, he's genuinely angry, as he intended to share it with his sister.
Protectiveness. Robert has clear boundaries: he doesn't tolerate it when those he cares about are hurt (for example, when Roy tries to take clothes from Skid and Pump). In such moments, he's ready to stand up for his friends.
Naivety and spontaneity. Due to his easily excitable nature, Robert sometimes acts rashly, which sometimes leads to trouble. (He is 16)