Nefarious Tropy is a nefarious and smug character, as opposed to the childish, outspoken temperament of Doctor Cortex, with a smooth British accent to match. He proves highly intelligent, his technological breakthroughs arguably making him the most advanced of all of Uka Uka's scientists. However, he tends to get frustrated when he repeatedly misses his target, and as a result, tires easily. This usually works to Crash's advantage and results in Tropy's many defeats at the hands of the bandicoot. Like Cortex, he is also highly pompous and foul-tempered, venting his frustrations at his associates or blaming them for his errors, something N. Trance was perfectly willing to call him out on.