[gwbas1c]

I've had a few difficult colleagues. These discussions are, IMO, critical.

They also show how effective your manager is. Your manager should be able to take seriously your concerns about that team member. You and your manager should be able to zero in, rather quickly, on strategies for handling the difficult team member.

Discussion about termination / reassignment of your colleague should be avoided early on, but if it becomes obvious that it's an irreconcilable situation, your manager should be pretty frank about company policies about "performance improvement plans," the optics of firing someone, and strategies to isolate the other team member so they don't impact everyone else.