I use this as my android box:
https://www.skystreamx.com/ (The Mark I version, but I also have a Mark III gathering dust since I'm lazy). It comes with Kodi installed, but you can put anything from the Google Play store on it. I bought a wireless mini-keyboard and track pad and got Angry Birds running on my TV.
Then I use this Java freeware program to save the metadata that Kodi wants. It can dial into the MovieDB sites, but I like to keep everything local, especially for the oddball videos that don't have anything online.
https://www.tinymediamanager.org/