Nani is this thing
Glowtail
Glowtails are bioluminescent, lizard-like shoulder companions that provide portable light and alert you to nearby threats. Their glow also helps keep Nameless and Reapers at bay.

More Glowtail Name Ideas Tips
(Color it orange) Charmander
Geico
Lizard Dragon
Treeko
Glowbro
Charles is the best name
Rango
Kiwi...Just call him Kiwi
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Terrible Terror