PLANET ALGOL: ogc

Completely unrelated to my previous discussion regarding "serial numbers filed off" versions of WOTC's precious non-open content Product Identity created by fine gentlemen such as Charles Stross, good 'ole Alan sent me his write up for an exciting new floating paralytic-tentacle monster "The Beaktopus."

The material in the quote box below is hereby designated Open Game Content via the Open Game License.

BEAKTOPUS
No. Enc.: 1 (1)
Alignment: Chaotic
Movement: Fly - 120’ (30’)
Armor Class: 4
Hit Dice: 5
Attacks: 9 (8 tentacles, 1 beak)
Damage: (8 tentacles) 1d4 + paralysis / (1 beak) 1d6
Save: F6
Morale: 10
Hoard Class: XIX
XP: 570

The beaktopus is a solitary underground predator which most likely originated in the fevered dreams of of a wizard with too much time and talent, though not enough common sense. Lucky adventurers who have chanced upon this fearsome creature and survived, describe it as well over 7 feet tall, with a body consisting of a central body from which eight radially symmetrical tentacles descend towards the ground. Each tentacle is covered with small, wickedly sharp hooked barbs which are used to capture and neutralize its prey. A large, sharp beak is found on the bottom of the body, sitting between all of the tentacles, and serves as the creature's digestive track entrance.

The beaktopus moves via a combination of levitation and using its tentacles to propel it, and is completely silent when it wishes to be. The source of the creature's levitation ability is a gland located in the central body, and if removed and lanced, will secrete enough liquid to act as a potion of levitation if captured and stored properly.

When a party of adventurers stumbles upon a beaktopus (for what foolish person would seek one out willingly?), the beast will focus all of its attacks on a single victim, and attack that poor sod with all eight (8) tentacles. If any tentacle his, then not only will each rake the victim's flesh with barbed hooks for 1d4 damage, but each successful attack also necessitates a single saving throw vs. paralysis, with a -1 modifier for each successful attack beyond the first.

Once the beaktopus has successfully attacked its prey and paralyzed it, it will draw the prey towards its beak and in the following turns begin devouring its helpless prey. The beaktopus may move and attack its paralyzed prey with its beak at the same time.

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When WOTC released all that OGC/OGL jazz they took care to firewall a bunch of classic D&D monsters behind a product identity clause.

With indie publishers beings the wacky scamps that they are, a bunch of them has released versions of many of prohibited pre-2E monsters with the serial numbers filed off.

I'm working on some comprehensive simulacrum D&D encounter tables and have been using these versions to fill in some gaps; so far this is what I've come up with:
Beholder - Eye of Terror from Labyrinth Lord Advanced Edition Companion
Bullywug - Batrachian from OSRIC; Thugtoad from the Swords & Wizardry Monster Book
Carrion Crawler - Carcass Scavenger from ~~Adventurer Conquerer King~~ Labyrinth Lord
Displacer Beast - Phase Tiger from ~~Adventurer Conquerer King~~ Labyrinth Lord
Githyanki - Astral Raider from Ancient Vaults and Eldritch Secrets (a pretty "loose" version compared to the ultra-detailed Fiend Folio entry but it's there)
Grell - The Beaktopus makes for a workable substitute...
Mind Flayer - Mind Eater from the Swords & Wizardry Monster Book; Lasher from Mutant Future; The Thelidu from the Swords & Wizardry Monster Book are pretty close to the Mind Flayer, but their hit dice are significantly lower
Slaad - Bat from Ancient Vaults & Eldritch Secrets has kindly assembled the Senufio; Claudio Pozas made the Ogdoad for 3E, but they're a bit far from the original for my liking.

The monsters that I'm unaware of having any OSR-ish analogues are:
Githzerai - I admit, they don't exactly set the imagination on fire
Kuo-Toa - A whole lot of fishmen & Deep Ones out there though
Umber Hulk
Yuan-Ti - A whole lot of snakemen out there as well, but I haven't come across anything that closely replicates the AD&D version

Are any of you folks aware of additional versions of the "product identity" monsters or non-open pre-2E monsters that I have missed?