Shiny Koopa Troopa

Shiny Koopa Troopas are a rare species of Koopa Troopa that first appear in Paper Mario: Sticker Star. They look like normal red or green Koopas, except that they shimmer, similar to shiny stickers.

Paper Mario: Sticker Star
In Paper Mario: Sticker Star, a Shiny Koopa's only attack is going into its shell and hurling itself at Mario. Shiny Green Koopas can be encountered in battle normally and attack faster, but a Shiny Red Koopa can only be fought if a Shiny Koopa Paratroopa has lost its wings. Shiny Red Koopas are stronger than Shiny Green Koopas but Shiny Red Koopas act like normal Koopa Troopas.

Mario & Luigi: Paper Jam
Shiny Koopa Troopas reappear in Mario & Luigi: Paper Jam as regular enemies. Unlike normal Paper Koopa Troopas, their stats are much stronger.