Albedo, the famous Mondstadt Alchemist is a Geo character who fights with a sword. He can be an extremely strong secondary DPS character, and you will get great results by switching to him and using his abilities as they come off cooldown, then switching back to your main DPS character.
Albedo’s Elemental Skill is Abiogenesis: Solar Isotoma. He creates a Solar Isotoma which deals area of effect Geo DMG. Enemies within the Solar Isotoma zone take damage and the Solar Isotoma will generate Transient Blossoms which deal further area of effect Geo DMG. DMG dealt scales off Albedo’s DEF stat, so this is an important aspect of his build, and you should be looking for the DEF sub stat on his Artifacts. Transient Blossoms can only be generated once every 2 seconds.