These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Crazy Awesome: Garrus. Described via Word of God to be the unholy fusion of Jack Bauer and the Kool Aid Man. Even the Scrin describe him as insane.
To a lesser degree, Grenck the vorcha. Modified his translator to not only speak in something other than the You No Take Candle speech the vorcha usually have, he also has it speak in an English accent. He also wears a top hat and as the Scrin find out, is quite good with explosives.