Well this probably reads like a wishlist of abilities from a couple of oozes. But, hey its a fighter type with a +4 BAB and 6HD. :\
ECL 8 Sentient Acid Ooze
Str +2 Dex +4 Con +4 Int -4 Wis -2 Cha -2
Size: Small
HD 6d10
no good save, but a +3 resistance bonus to all
Skills: (Int +2) class skills are climb, hide, listen, move silently, and swim
Speed: 30'
BAB +4
Attack: Slam d4+4d8 acid or melee weapon
Full Attack: Slam d4+4d8 acid and melee weapon
Acid (Ex) acid secreted by an sentient acid ooze does not effect metal or stone
Improved Grab (Ex) To use this ability, an ooze man must hit with its slam attack. It can then attempt to start a grapple as a free action without provoking an attack of opportunity. If it wins the grapple check, it establishes a hold but cannot constrict or pin
Vexing Grapple (Ex) Ignores relative size differences when making grapple checks but cannot pin. In addition, when maintaining a grapple an ooze man can attack with a single one-handed weapon in addition to dealing acid damage
Attacks that hit a grappling sentient acid ooze deal half their damage to the ooze and half to their grappled opponent
Liquid Body (Ex) Sentient acid oozes can fit through any opening a viscous liquid could pour through
Blindsight(ex) 60'
Blind, immune to gaze attacks
Immunity to illusions, decapitation, poison, sleep effects, paralysis, polymorph, and stunning
Considered and ooze rather than a humanoid for the purposes of charm person, hold person etc.
+2 save versus other mind-effecting spells and effects
Moderate Fortification 75% chance of normal damage when hit with a critical or sneak attack
Not subject to flanking
Sentient acid oozes eat, but can breathe air or water, and do not sleep
Sentient acid oozes may use the body, neck, and 2 ring slots but cannot effectively use items that use the feet, chest, face, head or hand slots
+5 racial bonus to climb and swim