A Character's expertise gives him\her a Skill effect increase (x%) depending on the Character rarety, Gray Characters (comon) (5%), Blue Characters (uncomon) (10%) and Orange Characters (rare) (15%).
Fire Expertise Characters:[]
Sarutobi Asuma (5%)
Love Aikawa (5%)
Hinamori Momo (5%)
Ichigo (White) (15%)
Ichigo (Bomb) (15%)
Kurosaki Ichigo (15%)
Jiraiya (15%)
Water Expertise Characters:[]
Nanao Ise (5%)
Zabuza Momochi (10%)
Haku (10%)
Hitsugaya Toshiro (10%)
Halibel (15%)
Kuchiki Rukia (15%)
Suigetsu (15%)
2nd Hokage(15%)
Earth Expertise Characters:[]
Hirako Shinji (5%)
Hollowfield Hirako Shinji (10%)
Gaara (15%)
Lightning Expertise Characters:[]
Renji (5%)
Kusajishi Yachiru (10%)
Hatake Kakashi (15%)
Uchiha Sasuke (15%)
Wind Expertise Characters:[]
Ggio Vega (5%)
Soifon (10%)
Uzumaki Naruto (15%)
4th Hokage (15%)
Shihouin Yoruichi (15%)
Kushina Uzumaki (15%-20%)
Mashiro Kuna (15%-20%)
Body Techniques Expertise Characters:[]
Akamichi Choji (5%)
Inuzuka Kiba (5%)
Grimmjow Jaegerjaquez (10%)
Hollowfied Grimmjow (10%)
Hyuuga Neji (10%)
Lee Rock (10%)
Hyuuga Hinata (15%)
Haruno Sakura (15%)
Kakuzu (15%)
Ninja Tool Expertise Characters:[]
Tenten (5%)
Shino Aburame (5%)
Scorpion - Sasori (10%)
Ichimaru Gin (10%)
Zangetsu (10%)
Kuchiki Byakuya (15%)
Seal Release Expertise Characters:[]
Anko (5%)
Orochimaru (15%)
Nelliel (15%)
Illusion Expertise Characters:[]
Pain (15%)
Uchiha Itachi (15%)
Aizen (15%)
Nara Shikamaru (5%)
Yūhi Kurenai (5%)
Healing Expertise Characters:[]
Ulquiorra (10%)
White Ulquiorra (10%)
Kabuto (15%)
Tsunade (15%)
Hollowfied Ulquiorra (15%)
Unohana Retsu (15%)
Orihime Inoue (15%)
Karin (15%)