Tidal Golems are water Rabbid/Golems that appear in Mario + Rabbids Sparks of Hope, specifically in the The Last Spark Hunter DLC. They are one of three Golem variants that first appear in the The March of the Golems battle in the Melodic Gardens. They bear a slight resemblance to the Icicle Golem from Mario + Rabbids Kingdom Battle, although they are smaller and are actual Rabbids, not entirely composed of rocks. Tidal Golems have rocks with water flowing between them on their backs and shoulders.

Source: https://www.mariowiki.com/Tidal_Golem