Originally Posted by
Slashley
Pretty much none.
Tyr is good until Brahma awakening, but only because Thunder is so _starved_ for decent SSRs. After Brahma Awakens, Tyr probably can't fit into a Thunder team.
Thor is great if you're interested in try-harding Union content. Her Awakened form Paralyze is a requirement for soloing extreme level Union fights. Otherwise, she's a slot machine. Are you feeling lucky (punk)? Thor can single-handedly win you fights when her Paralyze lands. Which is... not often. Not even with 6% Affliction Accessories and Astraea's debuff-.
Sol might not be a Thunder Hime, but she might as well be. If there's ever content where you want to run Thunder heals, Sol is what you do. Thunder has difficulty affording to run Andromeda, after all. On DMM to this day, there's one limited time SSR healer for Thunder and one raid-SR, whose heals are between Nike and Brynhildr.