The material below is Open Game Content from a 3PP Source
A writhing, seemingly endless segmented monstrosity crawls forth, its great mandibles clacking as it spies prey.
Titan Centipede (CR 9; 6,400 XP)
N Colossal vermin
Init +0; Senses darkvision 60 ft.; Perception +4
AC 21, touch 2, flat-footed 21
(+19 natural, –8 size)
hp 135 (10d8+90)
Fort +16, Ref +3, Will +3
Immune mind-affecting effects
Speed 60 ft., climb 60 ft.
Melee bite +15 (4d6+24 plus poison)
Space 30 ft.; Reach 30 ft.
Special Attacks trample (6d6+24, DC 31)
Str 43, Dex 11, Con 29, Int —, Wis 10, Cha 2
Base Atk +7; CMB +31; CMD 41 (can't be tripped)
Skills Climb +24, Perception +4, Stealth –8; Racial Modifiers +4 Perception, +8 Stealth
Environment temperate or warm forests or underground
Organization solitary, pair, or colony (3–6)
Poison (Ex) Bite—injury; save Fort DC 24; frequency 1/round for 6 rounds; effect 1d6 Dex; cure 2 consecutive saves.
The largest of their kind, titan centipedes are thankfully also the rarest. They attack other living creatures fearlessly, and require constant sustenance to nourish their vast bulk. Humanoids are in most danger from titan centipedes when mounted rather than afoot—a good-sized horse makes a much more satisfying meal to the centipede than a few bites of human. Titan centipedes are solitary by nature and because of the demands of their appetite, though when food is plentiful, multiple centipedes sometimes lurk in the same area.