Crimson Alliance was founded by King Crimson sometime in Beta 5 (09-04-99/04.09.99). Crafted as a neutral guild, they refused to interfere in the fights of order and chaos, good and evil that were ranging in Tibia. The Alliance centered around the sign of Crimonia, a former band of loyal warriors and mages to the King. There was a nebulous statement about achieving their goals and crushing those who interfered, but I couldn't guess what those goals may have been. It seems that the guild was more a group of friends then a public guild.
The guild had a hall which I believe was in Greenshore. King Crimson worked on many graphics and displayed them on the site and offered up many stories, most of which have been lost.