Guard Scorpian
Value: Exp: 500/character ABP/MP/AP/AP: 20/5/500/30; Gil: 5000
Suggestions: Don't attack it while its tail is up, otherwise, it's not a tough boss to defeat.
Air Buster:
Value: Exp: 750/character; ABP/MP/AP/AP: 25/7/750/50; Gil: 7500
Suggestions: It'll cut between your party leaving his back exposed to at least one person. hitting its back causes double damage, keep this in mind while fighting it.
Aps:
Value: Exp: 1000/character; ABP/MP/AP/AP: 30/10/1000/60; Key Items: Life Orb; Gil: 10000
Suggestions: An undead creature that's weak against lightning. All you'll need to know.
Sample:
Value: Exp: 1000/character, ABP/MP/AP/AP: 35/12/1200/75; Gil: 15000
Suggestions: A strange specimen with three weakling cronies it can revive easilly.
Motor Ball:
Value: Exp: 1500/character; ABP/MP/AP/AP: 35/12/1200/75; Gil: 20000
Suggestions: This one's got some power behind it. Keep your HP up.
Mission 11 Bosses
Bottomswell
Value: Exp: 500/character; ABP/MP/AP/AP: 20/5/500/30; Gil: 5000
Suggestions: None
Jenova-BIRTH:
Value: Exp: 2000/character, ABP/MP/AP/AP: 50/25/2000/100; Gil: 50000
Suggestions: None
Red Dragon
Value: Exp: 1000/character; ABP/MP/AP/AP: 25/7/750/50; Materia: Bahamut; Gil: 15000
Suggestions: None
Jenova-LIFE:
Value: Exp: 2000/character, ABP/MP/AP/AP: 50/25/2000/100; Key Items: Holy Orb; Gil: 50000
Suggestions: None
Jenova-DEATH:
Value: Exp: 3000/character, ABP/MP/AP/AP: 75/50/4000/150; Key Items: Death Orb; Gil: 100000
Suggestions: None
Individual Mission Bosses
Dyne:
Value: Exp: 500/character; ABP/MP/AP/AP: 20/5/500/30; Gil: 5000
Suggestions: Just beat him up to death.
GI Nattak:
Value: Exp: 1000/character; ABP/MP/AP/AP: 30/10/750/45; Gil: 7500
Suggestions: Undead, but still tricky.
Lost Number:
Value: Exp: 1500/character; ABP/MP/AP/AP: 30/10/750/45; Gil: 10000
Suggestions: Two sides, one magical, one physical.
Materia Keeper:
Value: Exp: 2000/character; ABP/MP/AP/AP: 50/20/1200/75; Gil: 25000
Suggestions: None (TOUGH!)
Schizo:
Value: Exp: 2000/character; ABP/MP/AP/AP: 50/20/1200/75; Gil: 25000
Suggestions: Two heads, one fire, one ice.
Jumbo Cactuar:
Value: Exp: 0; ABP/MP/AP/AP: 100/50/2000/125; Gil: 0
Suggestions: Lots of HP and dangerous.
Tonberry King:
Value: Exp: 0; ABP/MP/AP/AP: 1/1/14/1; Gil: 0
Suggestions: Lots of HP and dangerous.