Doomtrain

Doomtrain is a summon exclusive to Final Fantasy VIII. Its attack, Runaway Train, is Poison-based and can inflict several abnormal statuses on the enemy.

Obtaining Doomtrain
To obtain Doomtrain, you need Solomon's Ring, 6 Steel Pipes, 6 Remedy+, and 6 Marlboro Tentacles. Once you have all thses, use Solomon's Ring, and Doomtrain will join you.

Final Fantasy 6 Connection
Doomtrain resembles Phantom Train.