Cait Sith rides around on the back of a huge stuffed Mog he magically brought to life. Your party will first meet him at the Gold Saucer. Megaphone in hand, he's always shouting orders and creating dopey attacks. When his slot machine attack works, the enemy camp looks like an overturned toy box. His hobby is fortune-telling, but like his personality, it's pretty unreliable.
Cait Sith's Mog delivers his physical attacks at close-range and can withstand a lot of damage, so without too much Materia he belongs on the front line. Not a powerful physical fighter, his real value is in his Limit Breaks, Dice and Slots.