Summon Materias are red, and they add the "Summon" command in the battle menu, from which is possible to call upon a powerful magic beast.

---

Choco/Mog
Element: Wind
MP cost: 14
Stars: 5
Equip Effect:
Magic +01
MaxHP -02%
MaxMP +02%

AP:
Lv1: 0
Lv2: 2000
Lv3: 14000
Lv4: 25000
Lv5: 35000

Summoning Effect: Deathblow, Wind elemental damage on all enemies, sometimes causes Stop; Fat Chocobo, physical damage on all enemies (chance of summoning: 1/16).
How to obtain: Nella Chocobo Farm alla fine della danza dei chocobo, guarda a terra e vedrai la materia.

---

Shiva
Element: Ice
MP cost: 32
Stars: 5
Equip Effect:
Magic +01
MaxHP -02%
MaxMP +02%

AP:
Lv1: 0
Lv2: 4000
Lv3: 15000
Lv4: 30000
Lv5: 50000

Summoning Effect: Diamond Dust, Ice elemental damage on all enemies.
How to obtain: Save priscilla from the water fiend that attacks her and Mr Dolphin.

---

Ifrit
Element: Fire
MP cost: 34
Stars: 5
Equip Effect:
Magic +01
MaxHP -02%
MaxMP +02%

AP:
Lv1: 0
Lv2: 15000
Lv3: 30000
Lv4: 60000
Lv5: 80000

Summoning Effect: Hellfire, Fire elemental damage on all enemies.
How to obtain: Pick up the red Materia immediately after defeating Jenova Birth on the boat to Costa del sol.

---

Ramuh
Element: Lightining
MP cost: 40
Stars: 5
Equip Effect:
Magic +01
MaxHP -02%
MaxMP +02%

AP:
Lv1: 0
Lv2: 10000
Lv3: 25000
Lv4: 50000
Lv5: 70000

Summoning Effect: Judgement Bolt, Lightning elemental damage on all enemies.
How to obtain: Pick up the red Materia in the jockey's room after Ester's advice, that is before running the first chocobo race.

---

Titan
Element: Earth
MP cost: 46
Stars: 5
Equip Effect:
Magic +01
MaxHP -02%
MaxMP +02%

AP:
Lv1: 0
Lv2: 15000
Lv3: 30000
Lv4: 60000
Lv5: 80000

Summoning Effect: Anger of the Land, Earth elemental damage on all enemies.
How to obtain: Destroyed reactor at Gongaga.

---

Odin
Element: N/A
MP cost: 80
Stars: 5
Equip Effect:
Magic +01
Magic def +01
MaxHP -05%
MaxMP +05%

AP:
Lv1: 0
Lv2: 16000
Lv3: 32000
Lv4: 65000
Lv5: 80000

Summoning Effect: Steel-Bladed Sword, attempts to slay all foes immediately; Gunge Lance, deals non elemental damage on all enemies.
How to obtain: Open the safe in the Shinra Mansion in Nibelheim and defeat the boss inside. The combination is +36, -10, +59, +97.