Cartoonish Dark/Edgy Illustrations Needed

I'm seeking a skilled illustrator for a series of cartoonish style illustrations for a creative writing project. The illustrations need to convey a dark and edgy tone, with a touch of whimsy. This would be part of a large project, so I will need someone willing to work with me not once but do several projects in the near future.

Key Requirements:
- Illustrate characters, environments, and symbolic objects in a consistent cartoonish style
- Capture the dark/edgy tone of the writing
- Some dedication and ability to do many pages over time
- Help keep consistency throughout a graphic novel

Ideal Skills:
- Strong experience in cartoonish illustrations
- Ability to convey complex moods and tones visually
- Experience with character and environment design
- Understanding of how to illustrate symbolic objects

Please provide a portfolio showcasing similar work.