Rinkas are weak, but appear in large numbers in an endless stream, making them difficult to dodge, especially in Mother Brain’s room. Be especially careful around them while moving from one room to the other, as they will easily pass through doors, hitting you twice in the process. Your best option is often to freeze the Rinkas to give yourself enough time to destroy Zeebetites and open locked doors. It is especially imperative to freeze them while fighting Mother Brain. Freezing a Rinka and using it as a platform is also the only way to escape from the acid pit in front of Mother Brain.
