Here is the information and upgrades on all characters.
Warning: unlock spoilers
Byleth

Weapon
Longsword
HP
160
Spirit Armor
100
ST
130
ST Recovery
20
MP
100
MP Recovery
10
ATK
30
MS
38
Dodge
18
Shield
DR
Skill
Berserk
Consumes 50 MP to enter a berserk state (juggernaut, ATK +50%, ST recovery +50%, MS +50%) for 30 seconds.
Upgrades
- Start with HP potion
- Max HP +30
- Max HP +30
- Start with Jade Pendant each run
- Max ST +30
- Additional consumable (+1 max of every item)
- Carry 2 weapons
- Extra longsword choice at start
- Longsword ATK +20%
Ajiela

Weapon
Polearm
HP
100
Spirit Armor
100
ST
100
ST Recovery
20
MP
130
MP Recovery
15
ATK
40
MS
38
Dodge
18
Shield
DR
Skill
Leech Life
Consumes 40 MP, granting leech life for 30 seconds. Grants 10% lifesteal and causes bleeding.
Upgrades
- Start with MP potion
- -50% burn, poison, slow reduction
- Additional consumable (+1 max of every item)
- Immune to possession
- Max MP +30
- Max MP +30
- Carry 2 weapons
- Extra longsword choice at start
- Polearm ATK +20%
Kharoum

Weapon
Sledgehammer
HP
100
Spirit Armor
100
ST
100
ST Recovery
20
MP
80
MP Recovery
10
ATK
56
MS
38
Dodge
18
Shield
DR
Skill
Attraction
Consumes 30 MP, drawing enemies into a small area and stunning them for 2s
Upgrades
- Start with 20 gold
- Max HP +30
- Additional consumable (+1 max of every item)
- 30% extra elite damage
- Max ST +20
- Killing refreshes stamina
- Carry 2 weapons
- Extra sledgehammer choice at start
- Sledgehammer ATK +20%
Ralciel

Weapon
Sword & Shield
HP
160
Spirit Armor
100
ST
100
ST Recovery
20
MP
80
MP Recovery
10
ATK
30
MS
38
Dodge
18
Shield
5
DR
Skill
Raise
Consumes 70MP, granting +5 HP/s for 30s (150hp total)
Upgrades
- Start with 20 gold
- Max HP +30
- Max HP +30
- +30% damage for 2s after successful shield block
- Max ST +20
- Additional consumable (+1 max of every item)
- Carry 2 weapons
- Extra Sword & Shield choice at start
- Sword & Shield ATK +20%
Xilvaron

Weapon
Twin Daggers
HP
100
Spirit Armor
100
ST
100
ST Recovery
30
MP
100
MP Recovery
10
ATK
30
MS
44
Dodge
25
Shield
DR
Skill
Mass Stun
Consumes 50 MP to stun enemies within a large radius for 5s
Upgrades
- +100% ATK when attacking from the side or back
- +100% ATK when attacking a stunned enemy
- Gain 3 seconds of “No Equal” after killing an enemy. MS +15% and ATK+30% for 3s.
- Max MP +30
- Max HP +30
- Additional Consumable
- Carry 2 weapons
- Extra Twin Daggers choice at start
- Twin Daggers ATK +20%
Japhriel

Weapon
Sickle & Chain
HP
80
Spirit Armor
100
ST
80
ST Recovery
20
MP
100
MP Recovery
10
ATK
39
MS
44
Dodge
18
Shield
DR
Skill
Slow
Consumes 30 MP to significantly slow all enemies in an area and disable dodges
Upgrades
- +30% ATK against bosses
- Max MP +30
- Max MP +30
- Max HP +30
- Slow causes enemies to take +20% damage
- Additional Consumable
- Carry 2 weapons
- Extra Sickle & Chain choice at start
- Sickle & Chain ATK +20%
Written by Eudae