Ah, Season 1. The beginning, in which Ben and Co. stopped Vilgax, Albedo, Aggregor, Zs'Skayr, and more!
Return of Vilgax, Part 1
Pilot: Albedo makes his own Omnitrix, and Vilgax escapes from it! Now, he sets of the first story arc as he finds a piece of something...
Return of Vilgax, Part 2
Now, Aggregor comes and makes a rivalry with Vilgax over who will complete the Potis Altiare. Who will win? Can Ben stop them both?
Ben? Who's Ben?
Ben gets shot down to Appoplexia by the Vreedles, and gets amnesia! And to top it all off, Vilgax and Aggregor come! Can he recover his memory in time to beat them and escape the angry Appoplexians?
Back to the Future!
Ben and Co. travel to the future to get a piece of the Potis Altiare, yet they get a big surprise! Can Ben stop future Albedo?
Dawn of the Squid, Part 1
Vilgax completes the Potis Altiare! Now, Ben must steal it and unlock the Ultimate Alien. But Vilgax steals it, and breaks it! Can Ben stop the much bigger, way more powerful Vilgax?
Dawn of the Squid, Part 2
Vilgax now plans to suck the universe into another dimension, disconnecting his new Omnitrix 2.0 from the Codon Stream. But Paradox comes with a big surprise. Can Ben control Alien X enough to stop Vilgax?
Aggregor, who was supposedly killed earlier, becomes fused with Darkstar! Now, he comes to Earth and attempts to absorb Ben's Ultimate Alien. Can they stop him before he does?
Ultimate Aggregor... Again
Aggregor has the powers of the Ultimate Alien! Now, Ben and Co. must look to other shows to stop him. Can he and the P&F gang stop Aggregor?
The Rise, but Not Fall, of Albedo
Albedo returns, and captures Ben and impersonates him. A flashback reveals how he captured Ben. Can Ben escape?
Zs'Skayr escapes from the Omnitrix... again. Following him, they get shot down onto Probity's unnamed planet. Can they get off that planet in time to stop Zs'Skayr?
The Spookiest Finale, Part 1
Zs'Skayr has taken over Vilgaxia. Can the gang stop him?
The Spookiest Finale, Part 2
The gang, shot to Anodyne by Zs'Skayr, must stop Zs'Skayr. But Verdona gives everyone a big surprise. Can Anodite Ben stop Zs'Skayr?
The Spookiest Finale, Part 3
Season Finale: The gang is ready for a final face of with Zs'Skayr. Can even Ben as an Anodite stand up to Zs'Skayr, now possessing Albedo as the Ultimate Alien?