Tassi is a kind soul who was chosen by Glint to be her herald, and later chosen by Aurene to be her champion. She's devoted to her duties and to protecting the world, but she will always choose to spare any adversaries over killing them.
I originally based this look on the shield, Glint's Bastion, but I ended up not using it very much. Instead she has the Alchemist Hammer! She's also wearing the Crystalline Wings Backpack, I couldn't find it in the accessories.
I find asura slightly hard to screenshot because of their size, but I hope these screenshots show off the look well enough!
EDIT: I updated the screenshots to be more zoomed in so you can see the details better!