3 Bandits - Three thieves, in short, who stole a golden statue, an urn and the Shamans Rod. Isaac, Garet and Ivan meet them in Vault.

3 Bandits (2nd time) - The same thieves will appear in Madra, when you talked to the mayor of Vault in the original game and transferred your game. They say they are still angry on Isaac, and they will take it out on Felix' party. When you've finished them off, they will drop a pair of Golden Boots.
Agatio & Karst - Agatio and Karst are from the Fire Clan of the North, the village of Prox. You will fight them onto the Jupiter Lighthouse Aerie.

Aqua Hydra - A Hydra is a beast with three heads. The most famous Hydra known is the one from the Ancient Greek World in Thebe. The Aqua Hydra is a snake, summoned out of several Aqua Jellies on Piers' Ship.

Avimander - The Avimander is a ferocious beast in Champa. This beast is owned by Obaba, the grandmother of Briggs.
Azart - A Collossfighter.

Briggs and Seafighters - Briggs is just an ordinairy pirate from Champa.

Chestbeaters - Three big apes, guarding the Kandorean Temple.

Deadbeard - The Ancient Ghost Pirate, who guards the Demon Mail (wow...) at the bottom of Crossbone Island. Apparently, it was him who let the Replacement Ship of Kalay-Tolbi sink to the bottom of the sea.

Doom Dragon - The Doom Dragon is doomed, because the Wise One ("the force who doesn't want to see Mars Lighthouse rekindled") summoned it. This is a transformation out of Felix' and Jenna's Parents plus Kyle, Isaacs father.

Dullahan - Dullahan is the strongest boss in both games. It's VERY hard to defeat him in a regular way like attacking and using psynergy. Yet to fill in more.

Flame Dragon - Agatio and Karst in their transformed status, because Wise One didn't want to see the beacon shine in Mars Lighthouse.

Fusion Dragon - The Fusion Dragon is a combination of Saturos and Menardi. Appears on Venus Lighthouse Aerie.

Hydros Beast - The Hydros Beast (Hydros = Water) is a Big Living Statue in the bottom of the ruins of Altin Peak. Since the eruption of Mount Aleph, the guardian statue came back to life.

Killer Ape - Just a big ape living in Mogull Praerie/Forest.

King Magicore - A Magicore who guards the exit of Lamakan Desert.

King Scorpion - King Scorpion is the one who guards the Psynergy of SCOOP in Yampi Desert.

Kraken - Yet to fill in. Moapa - Moapa is the leader from Shaman Village and descendant of the tribe of Hoabna. Moapa is quite strong for a human beiing.

Navampa - A Collosso fighther.

Poseidon - Poseidon is known as the god of the seas in the Greek Mythology. Poseidon could indeed be p*ssed off, as he punished the hero Odysseus for insulting him. See for more information Neptune/Summons: Poseidon is the Greek naming for the Latin Neptune.

Satrage - A Collosso fighter.

Saturos - It was Saturos and his raiding party who've caused all this tragedy for 4 years long, since the storm. Saturos is originally from Prox, member of the Mars Tribe. You'll fight Saturos individually at Mercury Lighthouse Aerie.

Saturos & Menardi - You'll fight Saturos and Menardi as a duo on Venus Lighthouse Aerie. They act very powerfull, but it should be a piece of cake. Just like Saturos, Menardi is from the same Mars Tribe and Prox village.

Sentinel - Yet to fill in.

Serpent Dragon - Also known as the Orochi of Mount Mikage (Japanese). The Serpent Dragon was ALSO a statue who guarded a village called Izumo. The Serpent Dragon is located in the heart of Gaia Rock (Mt. Mikage) and is vulnerable for wind psynergies. It also hates light and that's why you have to open several holes and gaps inside the Rock.

Star Magician and Balls - A Magician with several Guardians: A Thunder Ball (the purple ball, which casts out Windenergy), a Refresh Ball (the blue ball, which heals the Star Magician), a Guardian Ball (the green one, which casts out a protective Aura) and an Angry Ball (the red ball, which selfdestruct itself to bring out great damage to your party). They all guard the summon of Azul in the cave of Treasure Island.

Storm Lizard - A lizard who creates the big grey Tornado in Suhalla Desert.

Tempest Lizard - A lizard who creates the big pink Tornado in Suhalla Desert. It sends you to Crossbone Island.

Tret - You fight Tret in Kolima Forest. It is actually a Fairy, as story tells. More will follow.

Valukar - Valukar is a a beast living in the Yampi Desert Cave. He has the power to steal your summons, because himself guards the summon of Daedalos. Yet to fill in more.