- See also: MTHR 548
She was the one who made the human-reptile hybrid in hopes that it would survive on the new world (α2).
However, she soon realised that the planet was poison after the creatures were killed by the atmosphere. Then, she headed back to earth to recolonize the world with her dinosaur-like creatures.
MTHR 248's serial number is only mentioned in the Japanese script, and is used when MTHR tries to kill Patrick in the frozen cargo bay. In the English script, she and MTHR 548 are both referred to simply as "MTHR".