Pengy Cell
From Club Penguin Fanon Wiki
Pengy Cells are microorganisms from Penguin Origins: The Tidal Pool. Despite the name, they are zooplankton rather than cells. Pengy Cells were the first form of penguins, and before gaining sentience, they moved around the world around them and consumed food and grew with more DNA over time. The organelles also mated, creating eggs. Throughout there time, Pengy Cells evolved stronger weapons and random ways to move.
As generations went on, Pengy Cells grew larger, and the organisms became multi-cellular; creatures!