It's just how i makes characters. i pick a theme to go with and use whatever first comes up in my mind relating to the subject. After some research on Neodymium, i looked at what it was mostly used for and it turns out that Neodymium magnets are pretty much the strongest magnets in the world.
Using that info my thinking process literally went like this:
i figured it would be funny to make Mr. Neo super obsessed with horses and uses a lot of crappy horse puns as part of his rich business man personality, using his magnet fingers for shady situations. i'm sure i'll think of more reasons later but yeah that's it.
In a way it works altogether? for me at least.
*feel free to ask if you're curious of my thinking process with the others*