The Cold-Blooded perk icon.
Cold-blooded is a Tier 2 perk appearing on Call of Duty: Modern Warfare 2 that makes players undetectable to all killstreak rewards and thermal imaging. The Pro version prevents the red name and crosshairs from appearing on an enemy's screen when they are looking at the user.
Trivia
- The perk picture shows a lizard (a "cold-blooded" reptile) surrounded by snowflakes.
- In reality, "Cold-Blooded" describes an organism that relies on heat to survive.
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