On Saturday night, the comedian and host of HBO’s “Last Week Tonight” saw his latest crazy creation set out into the world as the Erie Moon Mammoths made their debut in front of a record crowd of 7,070 at UPMC Park.

The Moon Mammoths are here. In a matchup of two of the most widely discussed alternate identities of the year, the Erie Moon Mammoths -- the Minor League team conceived and designed by the late-night

The Double-A Eastern League Erie SeaWolves temporarily rebranded as the Erie Moon Mammoths in a promotional collaboration with HBO’s 'Last Week Tonight with John Oliver,' and the debut lived up to the hype on July 19.