At first glance, most people dismiss Luis as a sleazy bum. He comes off as laid-back, sarcastic and careless; he's glib, outspoken and also happens to be a compulsive liar. A self-professed "good-for-nothing ladies' man,". He's devastatingly intelligent and won't admit it, but had things gone a little better in his former life, he could have been one of the most famous scientists in the world. Luis' is hopelessly devoted to his lover. He tends to mix his Spanish words into his sentences.