Accidental Innuendo: Before they even became the Chicago Transit Authority, they went by the name "the Big Thing", which apparently caused some controversy in the Chicago club circuit.
Broken Base: Their stuff post-Kath era divides the fanbase.
Face of the Band: Averted for a while, then in The Eighties, it was Peter Cetera. Who then left halfway through the decade.
Replacement Scrappy: Kath replacement Donnie Dacus lasted for only two albums(Hot Streets and Chicago XIII), and was later acknowledged as "a mistake".
Unfortunately, this goes for any lead vocalist who's name isn't Terry Kath.
Too Dumb to Live: Terry Kath, who forgot the first rule of guns: Always assume it's loaded.
Justified, he had enough depression issues to not really care.