Guild Wars 2

If Soulbound runes are applied to an item does the item bind to the character that the rune is Soulbound to?

From http://wiki.guildwars2.com/wiki/Upgrade_component:

Applying an upgrade to equipped item causes that item to become soulbound.

So looks like it doen’t matter whether the rune is soulbound or not, it’ll make your item soulbound.