Actors unknown? TeacherBatsu

Guys,

currently I´m translating part 4 of the enthusiastic teachers batsu. When the 5 join the staff Meeting, who is actually playing the vice chairman and the chairman susuki?

Also, what means "secean"??? Or just a mistake in spelling?^^

The guy is Hakata Daikichi from the group Hanamaru Daikichi.
The lady is Suzuki Sawa :emo:

Sorry, the group is called "Hakata Hanamaru Daikichi"