Does a character who has been swallowed whole treat the swallowing monster as flat-footed?The Sage thinks that’s a reasonable interpretation. The “swallow whole” entry on page 315 of the Monster Manual indicates that the AC of the interior of a swallowing creature has “no modifiers for . . . Dexterity.” While this isn’t necessarily quite the same as saying that the monster is denied its Dexterity bonus to AC, it’s pretty close.
In addition, it certainly seems true that the swallowed character has total concealment from (i.e., is “invisible to”) the swallowing creature, which would allow the character to treat the creature as flat-footed against his attacks.
Put together, this means that letting the rogue get gulped might make an effective way to defeat a swallowing monster . . . assuming the bite and ongoing damage doesn’t kill her.
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