Some troublesome types who frequent laboratories require special handling.
They have some of the types I have encountered over the years, but not all of them. Might I suggest:
The Dinosaur: has been in lab for >15 years and has never learned a new technique or idea
Pickled Post-Doc: spend more time at social hour than in lab. Blames problems on you rather than the hang-over
Time Suck: problems with communication lead to everything taking 3-4x as long to explain as it would for you to just do it yourself
Confident Buffoon: announce they can do something better than you after only WATCHING you perform the procedure. Will mess up, but continue to say they can do it