Firebird Energy is a 100% Kiwi-owned, New Zealand-based brand that makes a clean, protein-infused coffee energy drink. Their formula delivers 150 mg of caffeine (from real filtered coffee) and 16 g of milk-based protein (20% whey for fast energy + 80% casein for slow release), all with less than 1 g of sugar and only ~77–81 calories per serving.