Drowned Chip
A Drowned Chip is a special tile, not seen in Chip's Challenge 2, that looks like Chip after having drowned in water. Drowned Chip tiles act as walls, with no special properties. This tile does not appear in any of the original Chip's Challenge 1 levels, but has seen use in custom levels.
In Tile World's Lynx mode, the Drowned Chip is converted to an actual wall.