Thunderstorm

Thunderstorm was a human warrior who wandered the Realms as a nomad mercenary in the early 1360s DR.

History
Thunderstorm was orphaned when he was a young child and had been on his own since his teenage years.

He traveled Faerûn, seeking battles to fight in and what rewards he could gain. He survived many battles to become a veteran warrior.

Skills
His great agility helped him defend himself.

Possessions
He fought with a longsword +3, a shield, and a javelin of lightning, and wore a girdle of stone giant strength.

Background
Thunderstorm is called a "nomad mercenary", but it is unclear if "nomad" simply describes his travels or if it means he hails from a nomad tribe.

The artwork for Thunderstorm's card in the AD&D Trading Cards range was taken from the cover art of the Forgotten Realms Campaign Set, though the trading card character remained little known. However, on the former Wizards of the Coast forums, it was once asked "Who's the dude on a horse on the Old Gray Box?" and Markustay dubbed him "Dood Onahorz", which Lord Karsus revised to "Dûd Onahorz" to sound more Realmsian. The fanon character Dûd Onahorz has since become well known, with various biographies attached, for example, here.