Board Thread:Questions and Answers/@comment-7467815-20130428102725/@comment-5945589-20130428134344

Being a leader daemon only means increased skill activation rate, not 100% activation rate... So there is still a chance he doesn't activate.

I know, previously I faced Bisque Doll twice in the last tower event. Hariti using her skill would be the key to my victory, but she never used her skill in both battles... thankfully, the other 4 daemons used their skill so I won and got her in 1 battle. ;)