The character designs for the two mad scientists in Monsters vs. Robots, Dr. Tinkerton and Dr. Zadok, were made to contrast one another.

As you can see, Dr. Zadok is tall, thin, and angular, while Dr. Tinkerton is short, stout, and square.

Dr. Zadok has untamed spiky hair, like many of his monsters, and Dr. Tinkerton’s glasses are round to match the eyes of the robots he creates.

They also have contrasting background environments. Tinkerton’s surroundings are more Mid-Century Modern and retro futuristic, while Zadok has a Victorian aesthetic (verging on Steampunk).

The characters themselves share a common color palette to show that while their approach to the sciences may diverge, they actually have a lot in common.