Pokemon, Gundam Build Fighters Recommendations
Build Strike Gundam, I choose you!
Stay with me here. Both are well established franchises (one by Nintendo, the other by Bandai), where the focus has been to deepen their respective 'universes' with new various types of units that were added with each iteration.
But with the addition of Gundam Build Fighters, both franchises now have championship style competitions where people of various ages fight duels through their respective avatars (pokemon/gunpla) to try to become 'the very best'.