Koco the Seedling is a minor character introduced in the game 'Sonic Frontiers,' a part of the wider Sonic the Hedgehog series. Koco are ancient, sentient stone creatures inhabiting the Starfall Islands. They are small, round, and often found scattered across the landscape. While they don’t speak, Koco play a crucial role in the storyline, often helping Sonic unlock new abilities or progress through the islands. Their mysterious origins and connection to the island's history make them significant to the plot.