1, 2, and 5 for Gideon!
I had to think entirely too long about these, LOL.
1: Guns ‘n Roses “November Rain” – I kept bouncing between cheesy hair metal and ridiculously sappy love songs and this is a perfect compromise. XDD
2. He likes to meditate or do yoga. Being a guardian gets pretty chaotic (espeically with my crew), so when he’s alone he uses that time to re-center himself to keep his mindset in the right place.
5: Him being a big softie, he’d probably latch onto obscure and/or generally disliked Pokemon. “What are you talking about, this Trubbish is a fascinating species worthy of our time and attention!”