Blob

He's a water-like, amorphous blob of paint who starts out translucent but can absorb paint to change color, grow larger, and even mix multiple colors together (which is how he paints things, pretty much). His sense of justice is strong, energetic, has a bit of an attitude, kind, can be slightly lazy at times, and has a vengeful streak on some occasions (albeit he uses it for minor humiliation and nothing else). And he deeply cares about his friends, so maybe he'll care about you too. (Post-de Blob 2, where the evil Comrade Black of the INKT Corporation got sucked into a black hole and was never seen again, and Chroma City and Planet Raydia have been restored to their vibrant, colorful glory again!)