Giga Mermaid is a gigantic mermaid, with light green skin, long dark blue hair that runs past her hips, fish fin-like ears, and blue eyes. The top of her head is adorned with two massive jellyfish worn as hair accessories, along with a large blue jewel on her forehead. She wears a light blue strapless sea shell bra. On her waist and arms are gills. She has a 'belt' of light blue fins around her hips, and large pink fins poking out from underneath it. Her tail is dark green in color.