If you wish to create this Rank S monster , save constantly and pay close attention. Some weapons can alter the final monster's polarity or form. Some examples would be the combination of a great dragon and a metal dragon to create a mechan-o'-wyrm , the combination of a great dragon with a demon-at-arms to create a Dragonlord or the combination of a jumping jackal and a heligator to create a riptide. Only monsters at level 10 can be synthesized. Another form of special synthesis would be quad synthesis.
Kaliyah. Age: 29.
Only monsters at level 10 can be synthesized.
Olive. Age: 25.
Found Dqm 2 Synthesis Guide Woodus Humphrey
Warning: save before combining to ensure both monsters have the opposite polarity. Only monsters at level 10 can be synthesized. Synthesis is the process of merging two monsters of different polarities which first appears in Dragon Quest Monsters: Joker. After the desired skills are received, you can synthesize these together and you will have a rank S mumboh-jumboe.