11. Sunset Firefly
The sunset firefly is a cool little lightning bug that only reveals itself at or after sunset. It's one of a category of creatures in Breath of the Wild that behave differently depending on the time of day (a category that includes villagers of various species, by the way), and it highlights the attention to detail and immersive little touches that elevate BotW.
Also, it brings to mind Nathan Fillion, which is never bad.