Definitions by Teocarlo Pulgar

geigernaut 

An unstoppable juggernaut.

The geigernaut mowed down the tank single handedly.

geigernaut by Teocarlo Pulgar September 3, 2003

Ubernaut 

A mysterious and loyal sentient with herculean strength and agile capabilities to defend or do battle when called upon.

Although surrounded by a gang of thugs, the frail little boy smiled, fully knowing that a simple whim can conjure upthe ubernaut.

Ubernaut by Teocarlo Pulgar September 3, 2003