Ben 10: Maximum Heroes/Season 1

Season 1, where Ben, Gwen, and Kevin travel all over the universe to try and stop Lord Gemini and the League of Zodiacs. Welcome to Osmos V

Airdate: September 9, 2011, Number: 1, Number Overall: 151

Aggregor escaped from the Null Void and heads to Osmos V to destroy it.

Triple Trouble

Airdate: September 16, 2011, Number: 2, Number Overall: 152

Lord Gemini hires Albedo to capture the Maximatrix, but loses to Ben after accidently pulling Ben 10,000 back in time.

The League of Zodiacs

Airdate: September 23, 2011, Number: 3, Number Overall: 153

The League of Zodiacs comes to Earth and takes the Maximatrix from Ben. Ben then puts the Ultimatrix back on.

Freezer Burn

Airdate: September 30, 2011, Number: 4, Number Overall: 154

Ben heads to the planet of Stomlon to stop a war between the colonists of the planet.

The Ancient Horn

Airdate: October 7, 2011, Number: 5, Number Overall: 155

Ben discovers an alien species with a horn that can destory Codon, and thus nullify his powers.

Call of the Wild

<p style="text-align: center;">Airdate: October 14, 2011, Number: 6, Number Overall: 156

<p style="text-align: center;">Vilgax is temporarily moved to Area 51 when Azmuth decides to upgrade the Null Void's defenses.

<p style="text-align: center;">The Star Map Cometh

<p style="text-align: center;">Airdate: October 21, 2011, Number: 7, Number Overall: 157

<p style="text-align: center;">Lord Gemini steals the ancient horn and usen it to open the Great Gates and collect the Star Map.

<p style="text-align: center;">Don't Look Into the Light

<p style="text-align: center;">Airdate: October 28, 2011, Number: 8, Number Overall: 158

<p style="text-align: center;">Lord Gemini send Sir Ophiuchus on a quest after Sir Cancer questions his methods. During his quest, he accidently releases the Flashers.

<p style="text-align: center;">Off the Grid

<p style="text-align: center;">Airdate: November 5, 2011, Number: 9, Number Overall: 159

<p style="text-align: center;">When Kevin leaves to visit his father's grave, Ben and Gwen must work alone to stop Vulkanus from destroying the Earth.

<p style="text-align: center;">Into the Antarctic

<p style="text-align: center;">Airdate: November 12, 2011, Number: 10, Number Overall: 160

<p style="text-align: center;">The League of Zodiacs begins their search for the DNA Code

<p style="text-align: center;">The DNA Code

<p style="text-align: center;">Airdate: November 19, 2011, Number: 11, Number Overall: 161

<p style="text-align: center;">After successfully finding the DNA Code, Lord Gemini declares the war of Matrix Prime to be over.

<p style="text-align: center;">X Marks the Spot

<p style="text-align: center;">And Then There Were None

<p style="text-align: center;">War of the Thirteen

<p style="text-align: center;">Let the Games Begin

<p style="text-align: center;">The First Zodiac

<p style="text-align: center;">Paradox in the Second Universe

<p style="text-align: center;">Down to Earth

<p style="text-align: center;">The Inner Circle

<p style="text-align: center;">Mission: Impossible

<p style="text-align: center;">The Last Stand of the Zodiac League Part 1

<p style="text-align: center;">The Last Stand of the Zodiac League Part 2