From the 2015 Pokémon Card Game XY BREAK "Booster Pack: Red Flash" emerges the inaugural appearance of Mega Houndoom. Gracing the card with RR (Double Rare) and SR (Super Rare) rarities, it is a unique representation in the Pokémon TCG. Notably, as Mega Evolution takes a back seat in recent video game titles, this card holds special significance, exclusively featuring Mega Houndoom in the TCG within the confines of this distinctive pack.