The Shield is a Armor that protects you.There are more kinds of Shields;
-By Shape:
*Round
*Square
*etc.
-By defense-power,resitence,etc.:
*Round Shield (Lv1)
*Defenders (Lv7)
*Hoplon (Lv13)
*Kite Shield (Lv19)
*Collandras Flame (Lv25 epic)
*Phoenix Shield (Lv30)
*Dragon Hero (Lv38)
*Tower Shield (Lv43)
*Steel Castle (Lv49)
*Aegis (Lv54)(Drops from Angels Chests only)
*Flare Shield (Lv55)(Drops from Ele Cave bosses only)
*Brilliance Shield (Lv63)(Quest 60-65 6 slots no OJs or with OJs)
*Sirius (Lv69)
They can be either Noble,Worship,Heroic,Dread,Legend or Goddess and they can be linked with Lapises (Lv1-7,Absorption 5,6,Lucky Lapis and some Duals 1-5)