Piper

Alice's Signature hands Piper up to 60 Anomaly Mastery, 30% ATK and 40% Physical DMG Bonus on top of a high Base ATK. As a stat stick it's so strong that it's her undisputed best choice.

Jane's Signature swings in value with how many Dodge Counters you trigger, favouring on-field Agents. It still offers Piper strong Physical DMG Bonus, Anomaly Buildup and Anomaly Proficiency, but it can't match Alice's Signature.

The best fully F2P A-Rank for most Anomaly Agents, Piper included. Anomaly Proficiency jumps whenever any squad member inflicts an Attribute Anomaly, and the main stats give solid permanent ATK. Not on par with the options above, but a viable fallback.

Piper's Signature is built for Anomaly Agents with a spammable or channelled EX Special (currently just her). It gives 25% ATK unconditionally, and each EX Special hit grants one of three 5-second buffs: 12.8% Combat ATK, 64% Anomaly Proficiency or 40% Anomaly Buildup Rate, all holdable at once. Keeping all three up is the goal; inconsistent uptime drops it behind, and even perfect play trails the top picks.

A solid all-rounder that holds up on Piper too, since its ATK and DMG% boosts are almost always active. Other A-Ranks can match or beat it, but they need active management (Roaring Ride) or specific routes and teams (Weeping Gemini), so this remains a safe, consistent pick.