The Ghost Marble (not to be confused with Ghost Plasma) is a frosted glass marble appearing in Races 1 through 12 in 2017, and appearing in all the races for 2019 and 2020 editions of the Marble Rally so far. He did appear in the 2018 edition, but only playing a minor role. He did not appear in 2016 and the final race of 2017, but the steel ball bearing in the Hubelino Tournament in 2018 did.
The Ghost Marble's Role is to push up any marbles who get stuck on the course. In 2018, It was used as a 'Countdown Marble' in the starting blocks. However, sometimes it broke through the gate.
Marble League Appearances
The Ghost Marble is a hidden marble in several Marble League events, like the Sand Rally.