Higuchi (火口, Higuchi) or Mars is a character in Heaven's Design Team. Higuchi is an engineer who tests whether the animal designs will actually function in the physical world. She is the hardest worker in the office.
Higuchi has green eyes, long red hair that she wears in a ponytail, and she wears her goggles like a hairband. She has a tall, slim figure, which she shows off in a red, mechanic jumpsuit that she keeps unzipped to show her black bra. She completes her ensemble with a tool belt, yellow gloves, and green shoes.
Higuchi can be a bit aggressive at times, especially when building the animals she receives from the Design Department. She's very opinionated but sometimes can be very jolly - this seen when she shares a meal with Kimura.