Most of the builds are roughly balanced to make sure each character has decent enough HP and MP as well as with their other stats. Each one doesn't count for equipment or relics and is based on their base level 30 stats with 20 Esper Levels and level 50 stats with 25 Esper Levels.
Terra
Went for a Stamina build to support her Morph Ability.
Terra - Level 30
20/25 Esper Levels
Unicorn 8 (8 STAM + 240 HP)
Maduin 8 (8 MAG + 8 STA)
Carbunkl 4 (4 STAM + 100 MP)
VIG-MAG-SPE-STA-HP-MP
30-50-30-50-1260-326
Terra - Level 50
25/25 Esper Levels
Unicorn 8 (8 STAM + 240 HP)
Maduin 8 (8 MAG + 8 STA)
Carbunkl 4 (4 STAM + 100 MP)
Tritoch 5 (10 STAM)
Celes
Went for more of a red mage build to help support her teammates whilst also being able to contribute with either weapons or magic.
Celes - Level 30
20/25 Esper Levels
Ramuh 3 (6 VIG)
Siren 4 (4 MAG + 4 SPE)
Shiva 3 (6 MAG)
Phantom 4 (4 VIG + 4 STA)
Seraph 6 (180 HP + 90 MP)
VIG-MAG-SPE-STA-HP-MP
46-46-40-40-1260-301
Celes - Level 50
25/25 Esper Levels
Ramuh 5 (10 VIG)
Siren 4 (4 MAG + 4 SPE)
Shiva 5 (10 MAG)
Phantom 4 (4 VIG + 4 STA)
Seraph 7 (210 HP + 105 MP)
VIG-MAG-SPE-STA-HP-MP
50-50-40-40-2330-335
Locke
Still a traditional Rouge but can still heal if needed.
Locke - Level 30
20/25 Esper Levels
Ramuh 5 (10 VIG)
Kirin 4 (4 STA + 120 HP)
Ifrit 1 (2 SPE)
Phoenix 10 (300 HP + 150 MP)
VIG-MAG-SPE-STA-HP-MP
46-30-44-40-1446-331
Locke - Level 50
25/25 Esper Levels
Ramuh 7 (14 VIG)
Kirin 4 (4 STA + 120 HP)
Ifrit 4 (8 SPE)
Phoenix 10 (300 HP + 150 MP)
VIG-MAG-SPE-STA-HP-MP
50-30-50-40-2486-350
Edgar
Went a lot in on Siren to make him into a support character helping to provide MP fuel for the mages.
Edgar - Level 30
20/25 Esper Levels
Siren 10 (10 MAG + 10 SPE)
Unicorn 6 (6 STAM + 180 HP)
VIG-MAG-SPE-STA-HP-MP
36-40-40-30-1212-181
Edgar - Level 50
25/25 Esper Levels
Siren 10 (10 MAG + 10 SPE)
Unicorn 15 (15 STAM + 450 HP)
VIG-MAG-SPE-STA-HP-MP
36-40-40-39-2522-200
Sabin
Also a stamina build to support the team with and can still provide damage.
Sabin - Level 30
20/25 Esper Levels
Stray 9 (18 STAM)
Golem 2 (2 VIG + 40 HP)
Terrato 9 (540 HP)
VIG-MAG-SPE-STA-HP-MP
50-24-36-60-1684-181
Sabin - Level 50
25/25 Esper Levels
Stray 9 (18 STAM)
Golem 2 (2 VIG + 40 HP)
Terrato 14 (840 HP)
VIG-MAG-SPE-STA-HP-MP
50-24-36-60-3024-200
Cyan
Vigor build who can also tank.
Cyan - Level 30
20/25 Esper Levels
Kirin 9 (9 STA + 270 HP)
Bismark 9 (18 VIG)
Crusader 2 (120 HP)
VIG-MAG-SPE-STA-HP-MP
60-24-30-45-1482-181
Cyan - Level 50
25/25 Esper Levels
Kirin 14 (14 STA + 420 HP)
Bismark 9 (18 VIG)
Crusader 2 (120 HP)
VIG-MAG-SPE-STA-HP-MP
60-24-30-50-2672-200
Shadow
He hits fast and hits hard.
Shadow - Level 30
20/25 Esper Levels
Phantom 16 (16 VIG + 16 STA)
Fenrir 4 (8 SPE)
VIG-MAG-SPE-STA-HP-MP
58-36-50-52-984-181
Shadow - Level 50
25/25 Esper Levels
Phantom 18 (18 VIG + 18 STA)
Fenrir 7 (14 SPE)
VIG-MAG-SPE-STA-HP-MP
60-36-56-54-2024-200
Gau
Stamina build as the only other stat is speed.
Gau - Level 30
20/25 Esper Levels
Stray 18 (36 STA)
Fenrir 2 (4 SPE)
VIG-MAG-SPE-STA-HP-MP
42-36-40-60-972-181
Gau - Level 50
25/25 Esper Levels
Stray 18 (36 STA)
Fenrir 7 (14 SPE)
VIG-MAG-SPE-STA-HP-MP
42-36-50-60-2012-200
Setzer
Chunky healer.
Setzer - Level 30
20/25 Esper Levels
Shoat 8 (16 MAG)
Seraph 9 (270 HP + 135 MP)
Starlet 3 (6 STA)
VIG-MAG-SPE-STA-HP-MP
36-46-30-30-1290-316
Setzer - Level 50
25/25 Esper Levels
Shoat 10 (20 MAG)
Seraph 12 (360 HP + 180 MP)
Starlet 3 (6 STA)
VIG-MAG-SPE-STA-HP-MP
36-50-30-30-2420-380
Mog
Balanced so he can Dance and Jump.
Mog - Level 30
20/25 Esper Levels
Maduin 9 (9 MAG + 9 STA)
Palidor 9 (9 VIG + 9 SPE)
Terrato 2 (120 HP)
VIG-MAG-SPE-STA-HP-MP
40-46-46-40-2456-200
Mog - Level 50
25/25 Esper Levels
Maduin 10 (10 MAG + 10 STA)
Palidor 10 (10 VIG + 10 SPE)
Terrato 5 (300 HP)
VIG-MAG-SPE-STA-HP-MP
40-46-46-40-2456-200
Strago
Can attack hard with magic and enough MP to not need to support from Sabin or Edgar.
Strago - Level 30
20/25 Esper Levels
Shiva 5 (10 MAG)
Carbunkl 3 (3 STA + 75 MP)
Zoneseek 12 (12 MAG + 240 MP)
VIG-MAG-SPE-STA-HP-MP
24-70-24-45-978-556
Strago - Level 50
25/25 Esper Levels
Shiva 5 (10 MAG)
Carbunkl 8 (8 STA + 200 MP)
Zoneseek 12 (12 MAG + 240 MP)
VIG-MAG-SPE-STA-HP-MP
24-70-24-50-2018-700
Relm
Glass cannon mage to hit hard and fast.
Relm - Level 30
20/25 Esper Levels
Ifrit 2 (4 SPE)
Zoneseek 18 (18 MAG + 360 MP)
VIG-MAG-SPE-STA-HP-MP
24-60-40-30-966-586
Relm - Level 50
25/25 Esper Levels
Ifrit 7 (14 SPE)
Zoneseek 18 (18 MAG + 360 MP)
VIG-MAG-SPE-STA-HP-MP
24-60-50-30-2006-605