Orthros inflicts status ailments and Typhon can nullify resistance to status ailments for several turns, proving them to be a dangerous duo.
Orhtros' physical and magic resistances and elemental weaknesses change with each transformation, but by attacking with certain elements, its transformations can be limited somewhat.
Typhon uses an attack that can inflict instant KO regardless of resistance, and snort, which can remove units from battle, but these tricky attacks can be prevented by attacking with certain elements as well.
This monster is part of the Scorn of the Octopus and the Teacher