Shelgon
I never really paid attention to Shelgon, probably because of his simple design and low-key color scheme. To a six-year-old, the grey, round Pokémon is not the coolest or the one you can talk about with your friends. But as I started to collect Salamence, Shelgon grew on me. He's really cute! Also, his merch is not difficult to complete a collection for, simply because it's pretty sparse.