Cu Sith (summon)

Description
Cu Sith (クーシー Kūshī) is an Esper in Final Fantasy XII: Revenant Wings. The rank II Earth Ranged summon costs 15 affinity points to summon. His normal attack, Stone, deals earth damage to one foe. His special, Bedevil, inflicts blind on one foe.

Trivia
A Cu Sith also works in the sky saloon as the master artificier. It will craft weapons for you if you give her the right materials. the weapons often have better stats.

and the Cu Sith is actually female, as Tomaj calls it with 'she' and 'her'. She gets along well with Nono, though not at first.