Christian Whitehead, professionally known as The Taxman, is an independent game developer who lives in Melbourne, Australia. He is known for working with Sega and Headcannon to produce remakes and enhanced ports of the original Sega Mega Drive Sonic the Hedgehog games since 2011. His success with the ports led him along with Headcannon and PagodaWest Games to develop Sonic Mania, which was released in 2017.