Vs. Mega King Boo

Vs. Mega King Boo can refer to either one of the following Vs. Mega bonus challenges from Mario Kart Tour:
 * The Vs. Mega King Boo bonus challenge set in SNES Ghost Valley 1.
 * The Vs. Mega King Boo bonus challenge set on SNES Choco Island 1.
 * The vs. Mega King Boo bonus challenge set in DS Luigi's Mansion in the Beta Test.
 * The Vs. Mega King Boo bonus challenge set in DS Luigi's Mansion post-release.