Moonsnake

Moonsnakes are a primitive -like species that appear as obstacles in Super Mario Odyssey. They have a similar appearance and behavior to the Spike Bar obstacles seen in other games; however, they appear to be made out of segments of rolling rock instead of metal and have a base made out of Moon Rock. They come in different lengths and some have more than one set on a base. Some Moonsnakes are also able to move back and forth in a set path. They appear in the Seaside Kingdom, Snow Kingdom, Moon Kingdom, Dark Side, and Darker Side. They cannot be defeated by any means. The brochure for the Moon Kingdom refers to the ones found in the Moon and Seaside Kingdoms as separate, but similar species, and speculates that lunar creatures such as them may be the evolutionary origin of all life on Earth.