A software architect that comes up with overly complex, fragile designs that look great on paper but suck to work with. The architect subsequently bails before engineering teams start working with their 'design' and find all the design flaws, poorly thought out ideas, and parts that lack any common sense so they don't need to fix any of it.
Engineer1: We're way behind schedule because this system is so complex and fragile! Who designed this crap?
Engineer2: I forget her name. She bailed right before coding started.
Engineer1: We got drive by architected!