A svirfneblin, or deep gnome, sizes up the party and decides whether to give them directions to the next level or to summon an earth elemental to chase them away. (Russ Nicholson from the AD&D Fiend Folio, TSR, 1981.)
Hecate is the Greek goddess of the crossroads. She is most often depicted as having three heads; one of a dog, one of a snake and one of a horse. She is usually seen with two ghost hounds that were said to serve her. Hecate is most often mispercepted as the goddess of witchcraft or evil, but she did some very good things in her time. Hecate is said to haunt a three-way crossroad, each of her heads facing in a certain direction.
Baduhenna is a Germanic Goddess. Baduhenna would be something like 'the driven into battle' (the name is the Germanic Badw-struggle and the feminine conjugation 'henna'.) What could point in the direction of a war goddess. The clairvoyant Goddess Baduhenna that manifested Herself in the form of a raven, in this guise she could move from battlefield to battlefield and gloat to shed blood.
A heraldic monster of myth, the Yale was first spoken of by Pliny the Elder; it was an antelope-like beast about the size of a horse with tusks, long horns, and the tail of a lion or goat. Apparently it enjoyed wallowing in water. In battle, both horns could be used at once to meet aggression from any direction.
Typhon is one of the most powerful Greek mythology creature. Together with Echidna, it gave birth to many of the monsters that were featured above including Chimera, Cerberus, Sphinx etc. Typhon is said to be really huge. Its upper body is said to be mountain size. His bottom half comprised of large vipers that can reach far out in any directions.