Akris is a low level monster with really low attack but dropping high lvl items ( potions, magic stones, DIL and equipment).
Dropping rate :
Deneb : Potions(hardly ever Large), more DIL, equipment. Max lvl: 35 (also Rings or Amulet)
The Caves of Norak and Castor : The same stuff as in Haihaff and Requies, except for the deeper regions (2nd floors), where they drop the same stuff as in Crespo. Max lvl: 70
Heihaff/Requies Beach : Large potions lot of DIL and equipment. Max lvl: 45
Crespo : A lot of rhombus and medials are dropped frequently. Also, potions. Max lvl: 70