These are the beta elements for iPenguin (Game).
Thug was originally playable, being the power character and being unlocked after his fight, and Grebo was going to have a digging ability. A character known as Iceberg was also going to be playable, and was able to move water around so he can move in it easier. He was also met in an unknown icy level. This was all changed for unknown reasons.
There was originally an icy level in the game that featured large glaciers and some sort of temple. Iceberg would have been met here, but it was removed from the final game for unknown reasons.