To get HENGER you need to find the 5 DOLL PIECES during the DESERT EXPEDITION. Next,get your monster to A class and you will be invited to the WINTER INVITATIONAL with the DOLL HEAD as the prize. After you win, Tesca will put the 5 pieces together for you and give you the CLAY DOLL. he explains that you need to take an intelligent creature (550-999), along with the CLAY DOLL, to the previously unreadable STONE TABLET in the DESERT EXPEDITION.

After reading the TABLET, that monster will have a circular mark on his back. combine that creature, along with any other one and use the CLAY DOLL. HENGER has high STR, SKI, SPD, INT and lives for 6-9 years.