Valor-Golem, from Ultima Underworld
The Valor-Golem is a Golem made for a special test.
The Avatar met him in Ultima Underworld I on the sixth level of the Abyss on an island in a lava lake. The Valor-Golem said that if the hero managed to defeat him, the pirze would woul the Shield of Valor.
The Avatar did manage to do so, and the impressed Golem handed over the magical shield.