LBX: Little Battlers eXperience Season 2
A Mecha series from 2012 worth adding to your list.
One year after the fight with the Innovators, a new terrorist organization called the Detectors threatens the world using LBXs. Ban joins up with new and old friends to stop the Detectors. (Source: ANN)
Plot summary from MyAnimeList. Data and images via Jikan API.