Support abilites:
Stahn: Periodically increases the rank of a stat increasing herb.
Normal to blue and blue to red.
Rutee: Periodically receives gald or lenses.
Philia: Periodically uses up a Fruit type item to make a consumable item.
Leon: Increases character Attack power during battle (not sure about magic power).
Woodrow: Encounter rate down.
Chelsea: Periodically uses up a Seed type item to make a consumable
OR a Fruit Type item.
Kongman: Periodically increases one of his stats by 1.
Mary: Periodically increases the level of an accessory
(upper limit subject to her levels).
Johnny: Encounter Rate up. Increases item drop rate after a battle.
Lilith: Cooks specialized recipe
(i.e. Compressed Hamburger -> Uncompressed Hamburger).
Wow! I've been wondering what support abilities the other characters had (I only knew Mary sometimes level up accessories). Thanks for the info, man! It's really helpful.