[s3e21] Building The Perfect Weapon -

In the season 3 episode " Building the Perfect Weapon " of Avengers Assemble , the team grapples with the inclusion of Red Hulk while facing The Leader and the monstrous Ultimo. This 2016 installment explores the team's internal conflict and sets up a high-stakes scenario involving a dangerous weapon, as seen at Biff Bam Pop! and IMDb .