Attribute X X X
  Cute Cool Passion
Rarity X X X X
  SSR SR R N
High stat X X X X
  Vocal Visual Dance Balanced
Skill Type X X X X X X X X X X
  Perf. Lock* C. Guard Combo Bonus Score Bonus Healer H. Guard Overload All-Round Concen. Skill Boost
Skill Type X X X X X X X X X X
  Focus/Coord. L. Sparkle Encore T. Synergy Tuning Motif Symph. Alternate Refrain Magic
Skill Type X X X X X
  Mutual Overdrive T. Spike Dominant Present
Awakened?   X
  Yes No

(Short link)

Click on an underlined table header to sort the table by that value. Do note that you should apply filters before using the skill-based sorts, as you can't really compare skill effects.
Card VoViDa Skill Effect (sort: time window, % chance, duration, effect val.)
Helen
ダンシング・レガリア
5964 3859 3175
ヘレンズ・ユニバース Every 11 seconds, there is a 40..60% chance to increase Perfect note scores by 10%, and flick notes will receive a 30% score bonus for 6..9 seconds.
Komatsu Ibuki
月夜のダンサー
3536 3785 3570
ムーンウォーク Every 14 seconds, there is a 35..52.5% chance that Perfect notes will restore 3 life for 5..7.5 seconds.
Fukuyama Mai
ちいさな秋
3611 3645 3857
おおきな収穫 Every 11 seconds, there is a 40..60% chance to increase Perfect note scores by 19% for 5..7.5 seconds. (The timing window for Perfect notes will be smaller during this time.)