Their first outing with VtM yielded a vampire who could kill anyone on his turn with 30+ attacks, all doing aggravated damage. With no chance of botching the roll.
The next edition fixed that, but introduced some rather...odd things (I drain the blood of anyone I want at range with no drawbacks? Jawsome!).
The final edition yielded someone (my Giovanni) who could suck the soul from anyone he desired and replace that with a willing slave. Also, mosquito ghouls (errated, but still). Also, someone in our group made a hammer that could drop 30+ aggravated damage in a single strike. Someone else (me, sorry world) had a bevy of spectres floating around him at all times waiting to devour the soul of whomever the master drew out.
My character had a "revolving door" policy on PC death. Meaning, if their character died, I would suck the soul out of someone nifty, they would inhabit said body and be reborn, again, as a human, then again as a vampire.
Stuff like that.