|work| - Ben.10.ultimate.alien

. This era is defined by Ben's secret identity being revealed to the world and his use of the Ultimatrix

Ben 10: Ultimate Alien isn't just about new gadgets; it’s about maturity. Ben faces moral dilemmas that test his character, such as his rivalry with Albedo—who also utilizes an Ultimatrix—and his complex relationship with Kevin Levin, who once again struggles with his Osmosian mutations. ben.10.ultimate.alien