Stellar (XLM) - Boxing
We all understand it. Crypto enthusiasts understand XLM and normies and banks can easily understand it's use case. Boxing is a sport that is easy to understand. It's scalable. Just like boxing can be used from low-level street fights to high-level boxing or mma. XLM can connect the world like the sport of boxing did in it's heyday.
Monero (XMR) - Krav Maga
Secure and untraceable. Most importantly - private. Badass. Krav Maga is a top tier martial art that will guarantee your safety and make you secure. Badass use case for both.
Litecoin (LTC) - Kung Fu
Both are one of the OGs in their respective field. Many feel there are better altcoins than LTC. Many feel like there are better martial arts than Kung Fu. The fact of the matter is, the both have their use cases.