Behind Chain Chomp's Gate

Behind Chain Chomp's Gate is the sixth mission of Bob-omb Battlefield in Super Mario 64 and its seventh mission in its remake, Super Mario 64 DS. The mission's objective is to obtain the Power Star guarded by the titular Chain Chomp.

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In Super Mario 64, the Power Star is behind some iron bars, which can only be removed by Ground Pounding the peg that the Chain Chomp's chain is attached to three times. This frees the Chain Chomp, letting it break the bars and escape. The star in Super Mario 64 DS is located in the same place and can be gotten in the same way, but there are several alternatives to getting the star. This includes using Vanish Luigi to phase through the bars, ground-pounding the stake a single time as Wario, or collecting the star during 5 Silver Stars!, the Chain Chomp relocates to the adjacent field.

Trivia

 * In Super Mario 64, a higher jump is required to collect the star, since it is too high to collect with a normal one; in Super Mario 64 DS, this has been changed so that a normal jump can be used.
 * Though not often mentioned in tip/strategy guides, throwing a Bob-Omb at Chain Chomp will cause it to thrust itself into the air, leaving the stake vulnerable and easy pickings.