Sicanjal appears in every Corridor stage n with n=x*8+5. Rarely drops a Tendai Uyaku. After defeating it, there is a chance to obtain its skin which can be used when merging minions. This minion's skin has the skinventory-ID 4.
All bosses in the Eternal Corridor use infinite Mana, which allows them to use their attacks as often as they wish. Constantly uses its Tail - ---- + Power attack and standard attacks.