Rina
Who is Rina?
Rina is an S-rank Electric Support agent from Victoria Housekeeping Co. An enigmatic and elegant woman with an unusual interest in Ethereal creatures, she is the premier Electric buffer in ZZZ. Her Puppet mechanic deals off-field Electric Anomaly through two floating constructs, while her Ultimate applies a powerful team-wide PEN Ratio buff — the rarest and most valuable support stat in the game.
Kit Summary
Two autonomous constructs (Drusilla and Anastella) follow Rina off-field and attack independently, applying Electric Anomaly buildup passively.
Her Ultimate grants the entire team increased PEN Ratio for its duration — reduces enemy resistance universally.
Brief EX Special and Ultimate casts, then rotate back to the DPS.
Additional Ability activates with two Victoria members.
Build Guide
🔮 Best Relic / Echo Set
Swing Jazz (4pc) — Energy Regen and team DMG bonus on Ultimate use.
⚔ Best Light Cone / Weapon
Weeping Cradle (Signature) — increases PEN Ratio buff strength and adds Electric Anomaly bonuses. F2P: Slice of Time or Kaboom the Cannon — both provide strong ATK or Energy Regen stats.
📊 Substats Priority
👥 Best Teams
Electric Anomaly: Rina + Yanagi + Hoshimi Miyabi (Disorder team; Rina PEN debuff amplifies Disorder explosions)
Victoria: Rina + Ellen Joe + Von Lycaon (faction trio; Rina PEN buff enhances Ellen's Ice burst)
F2P Verdict
Rina is a standard S-rank — available from the permanent pool without limited pulls.
Her signature W-Engine is a strong upgrade but Slice of Time covers her Energy Regen needs.
Even a minimally invested Rina provides her PEN Ratio buff — the stat itself is the value.
Frequently Asked Questions
What is PEN Ratio and why is it important?
PEN Ratio (Penetration Ratio) reduces enemy defence and resistance when applying damage. It amplifies all damage types universally — making Rina's buff uniquely valuable across every team composition, not just Electric ones.
Is Rina available on the standard banner?
Yes. Rina is a standard S-rank obtainable from the permanent Signal Search at any time.
Does Rina need to be in an Electric team?
No. Her PEN Ratio buff applies to all damage types. She is widely used in non-Electric teams purely for the penetration buff.