Silver

Silver
Biographical information
Hometown	Redmountain Hills
First Comic	142
Last Comic	321
Physical description
Species	Horse
Hair color	White with Gray Mane & Tail
Affiliation	Order of the Stick
D&D Stats
Level	3 HD
Str	14
Dex	13
Con	15
Int	2
Wis	12
Cha	6
Feats	Endurance, Run
Skills	Listen +4, Spot +4
Abilities	Low-light vision, scent

[Source]

Silver was Roy's white horse, bought in the town near Redmountain Hills; he bought it shortly before leaving for the Wooden Forest.

Despite Silver having more ranks in Spot than any of the PCs in the party, the horse was unable to notice the Weasel-Eating Ogres before they ambushed the party.

During their encounter with the Bandit Clan of Wooden Forest, Silver, Whisper and other mounts went to a mounting park from which they were retrieved.

Silver was hitched to a cart once the party had recovered the hoard of the Black Dragon of Wooden Forest in order to carry all of their treasure. The horses continued as draft animals even after the party was captured by Miko Miyazaki.

Eventually the mounts were put in the stable of the Weary Travelers Inn and Tavern. The fate of Silver and the rest of the horses is unknown. They may have died in the blast that destroyed the inn, but they likely survived along with Durkon's pony. In any case, Miko led the party in chains to Azure City on foot, except for Durkon who was allowed to ride.

The mounts appeared once again briefly while leaving the City to visit the Oracle, until Elan reminded them that they were no longer in their possession.