This guide is mostly a descriptive list, it shows the exact effects, requirements of each promotion for all of the characters, so it will be a bit easier to decide till MM5. Enjoy! :D
Promotion Guide:
(Promotion from lvl 20, Double Promotion from level 40)
Marine
Special:
with all Shiva Promotions (Shiva, Shiva-Ka, Shiva-Zen) a Random Hit before each fight!
with all Wild Promotions (Wild Goose, Wild Tigress, Wild Falcon) gain Counter Hits!
Shiva: HP110% STR130% RES120%
double promoted to
Shiva-Ka: HP120% STR150% RES130%, Evade+15
Shiva-Zen: HP120% STR130% RES150% MND120%, Acc+20
Wild Goose: HP130% SPD150%
double promoted to
Wild Tigress: HP130% STR140% SPD160%
Wild Falcon: HP130% STR115% SPD190%, Acc+10 Evade+20
Spirited Soul: SP140% RS120% MN160%
double promoted to
Heart of Myst: HP125% SP140% STR140% RES140% MND180% Acc+50, The Book of So Many Tales
Zen Soul: SP140% STR120% RES140% MND180% Acc+50
Unbound Soul: SP140% STR110% RES170% MND160% Acc+50
Benoit
Hand Master: STR120% RES120% ATK120%
double promoted to
Lord of the Hand: STR160% RES140% ATK120%, Acc+25
Jun-Tsu Kaa: HP110% STR130% ATK130%, Acc+50 Evade+25
Silver Hands: STR120% RES160% ATK140% Acc+25
Karine
Baroness: HP140% STR120% RES120% MND110%, Seal of the Oak
double promoted to
Duchess: HP160% STR140% RES140% MND120%, Acc+50
Lady: HP150% STR130% RES130% SPD130% MND110%, Acc+50
Bounty Hunter: HP120% STR130%
double promoted to
Melee Queen: HP120% STR150% RES150%
Hirado
Holy Vicar: SP140% RES110% MND130%
Body Master: HP140% RES110% ATK105%
all of them can be double promoted to
Master Monk: HP140% STR140% ATK110%, Evade+10
Muscle Lord: HP185% STR110% RES110% ATK105% PD105%
Meditation Lord: HP140% SP150% RES120% MND150% ATK105% MD110%
Abu
Bekembe-Bakala: HP125% SP115% STR125% RES125% SPD125% MND125% ATK105%, Hatchet of Ancients
double promoted to
Belembe-Nahala: HP160% SP160% STR120% RES160% MND160%, Skull of Nahalan'dra
Panther-Baka: HP135% SP125% STR140% RES140% SPD150% MND125% ATK110%, Acc+50
Forest Hunter: HP115% STR120% SPD120%
Wise Spirit: SP115% SP80% MND150%
they can be double promoted to
Guru Nahadra: HP120% SP140% STR110% RES150% SPD120% MND150%, Evade+20, Skull of Nahalan'dra
Black Legend: HP150% SP125% STR165% RES150% SPD125% MND125% ATK120%, Acc+100, Androhorders Seal
Hand To Hand Warrior: HP115% STR140% RES130% SPD120% ATK110%, Acc+50
Wisdom Lord: HP120% SP115% STR110% RES140% SPD120% MND120%, Acc+50 Evade+20
Jezabel
Special: all Electra Promotions (Electra, Electra-Ra, Electra Kun) add Immune to Paralysis
Electra: SP115% ATK125% MD120% SPD110% MND110%, Medal of Fuzzy Orb
double promoted to
Electra-Ra: SP115% ATK135% STR125% MD120% SPD125% MND120%, Acc+50
Electra-Kun: HP120% SP115% ATK125% MD125% STR120% RES120% SPD110% MND120%, Acc+50
Whip Mistress: STR130% MND120%
all can be double promoted to
Steel (Air) Acrobat: STR140% RES125% SPD160% MND120% ATK110%
Jack
Acrobat: HP105% ATK120% PD110% STR110% RES110% SPD200%, Acc+60 Evade+45, The Circus of the Ocean
double promoted to
Steel Acrobat: STR140% RES125% SPD160% MND120% ATK110%
Trickster: HP105% STR110% RES140% SPD200% MND110% ATK120% PD110%, Evade+60 Acc+60, 2x Hit before Fight
Scimitar Lord: ACC+20 ATK130% STR130% SPD135%, Evade+15, Eye of the Fog
Warrior: HP125% STR125% RES110%
they can be double promoted to
Hand To Hand Warrior: HP115% STR140% RES130% SPD120% ATK110%, Acc+50
James
Warrior: HP125% STR125% RES110%
Bounty Hunter HP130% RES155% SPD120% MND110%, Explorer Medal
all of them can be double promoted to
Ghost Face: HP140% STR120% RES175% MND140% PD110% MD120%, Sewer Unholy Torch
Hand To Hand Warrior: HP115% STR140% RES130% SPD120% ATK110%, Acc+50
Salome
Quiet Sea: SP130% MND130% great defense
double promoted to
Zen Soul: SP140% STR120% RES140% MND180%, Acc+50
Dancing Crab: STR130% SPD110%
double promoted to
Shiva-Ka: HP120% ST150% RS130%, Evade+15, 2x Hit
Sand Skin: MP105% PD105% MD105% RES140%
double promoted to
Silver Hands: STR120% RES160% ATK140%, Acc+25
all of them can be double promoted to
Wave Dancer: STR160% RES120% SPD200% MND120% ATK120%, Evade+25 Acc+50, Gem of the Firth
Hand To Hand Warrior: HP115% STR140% RES130% SPD120% ATK110%, Acc+50
Merline
Boom Girl: ACC+15 STR125% SPD125%, Evade+5
double promoted to
Boom Boom Girl: STR150% SPD140% ATK120%, Evade+5 Acc+15
Big Girl: ACC+15 HP120% STR105% SPD90%, Evade-5
double promoted to
Explosion Girl: HP120% STR155% RES115% SPD90%, Acc+15
Wolfgang
Warrior: HP125% STR125% RES110%
double promoted to
Hand To Hand Warrior: HP115% STR140% RES130% SPD120% ATK110%, Acc+50
Suzuki
Retired Martial Artist: STR130% SPD130%, Evade +45
(double promoted to ?)
Bokden
double promoted to
Landstalker: STR140% RES140% SPD150%, Evade+30
The Bear
double promoted to
Myst Legend: HP170% STR170% RES170% SPD150% MND150% ATK120%, Evade+20 Acc+100
Promotion Items:
Explorer Medal
Eye of the Fog
Gem of the Firth
Hatchet of Ancients
Medal of the Fuzzy Orb
Order of the White Gripphin
Seal of the Oak
Sewer Unholy Torch
Skull of Nahalan'dra
The Book of So Many Tales
The Circus of the Ocean