The Seraph is a small mass-produced Viroid Battle Machine.
Seraphs seem to have been in use since the first Viroid attack on the Golden City and the Viroid copying of the concept of the Battle Machines. They are also used in the Viroids's attack on the Split Mountain after the Exo-Force rediscovered the Golden City and retrieved a code brick containing information about them from the Watch Tower in the Deep Jungle.
Seraphs are small white battle machines with a humanoid design with dark blue lines all over their armor. They are armed with a missile launcher on either arm along with a flamethrower on their right shoulder.