Cicero is crazy. But then again, you have to at least be a little crazy to be in the DB.I thought he was an interesting character and fit in perfectly as a member of the Dark Brotherhood.
I decided to spare him because even though he tried to kill everybody, at least he understands how the DB is suppose to operate.That and he's obviously deadly with a dagger.
I tried to have him follow me but he got annoying after a couple minutes. So now he just hangs out back at the DB sanctuary and tends to the Night Mother.
I find him both funny and pretty awesome character wise. The fact that in his journals he goes from a pretty normal sounding guy to the weird little thing that he is now.
Well, talking to a mummified corpse that doesn't respond to you for a couple of years will do that to a person.lol