タマ

A pocket-sized, lime-green creature whom befriends Dia and terrorizes Ascoeur and Q-feuille when the trio are assigned to investigate the ruins of the GOTT headquarters. With Dia's kiss, he was able to gather remnants of nanotechnology to shape-shift into a Genetech Beast. The trio bring him back to the GTO headquarters where Dia wears him as a necklace. Though they omit his presence from the debriefing, Hiver knows and does not disapprove.

Source: Wikipedia