Threaten

All creatures threaten an area around them based on their size, which allows them to take Opportunity actions and participate in Flanking. Creatures only threaten while armed with a weapon (which may be a natural weapon). Certain conditions may prevent a creature from threatening, such as those that impede a creature's ability to make attacks. Creatures only threaten other creatures that they can perceive.

Threat Range

A creature's Threat Range is dependent on its Size and represents that area that it covers and defends while in combat (or similar situations). This range can be increased through Racial Features, Powers, etc. Below is a summary of Threat Range based on size,.

Creature SizeThreat Range
Fine3 inch diameter area (1 inch around it)
Diminuitive18 inch diameter area (1/2 feet or 6 inches around it)
Tiny3 foot diameter area (1 feet around it)
Small9 foot diameter area (3 feet around it)
Medium15 foot diameter area (5 feet around it)
Large30 foot diameter area (10 feet around it)
Huge45 foot diameter area (15 feet around it)
Gargantuan60 foot diameter area (20 feet around it)
Colossal75 foot diameter area (25 feet around it)