Minions: Rise of Gru highlights the story of Gru as a budding super villain, and his age positions him at a pivotal point in the Despicable Me prequels' timeline. Ditching school to blast people with cheese rays, Gru and his tiny yellow friends get up to many despicable antics in Minions 2, but his real dream is to join the Vicious 6. Like a version of the Legion of Doom in the Despicable Me universe, this cohort of chaos is led by Wild Knuckles, Gru's favorite super villain and a legend in Evildom, though his position as head horrible honcho is precarious.
https://screenrant.com/minions-rise-gru-age-timeline-explained/