The character in the image you're pointing to does look somewhat leaf-shaped, particularly if you consider its overall outline.
It's a cartoonish, rounded green creature, somewhat flattened with an oval or teardrop-like body shape. The two green, curly antennae on its head could be interpreted as a stem or veins, further contributing to a leaf-like appearance.
The character is also split down the middle with a lighter and darker green side.
