Polarize 10.4

 is the fourth chapter of Polarize. Teams across the city begin collaborating, Breakthrough investigates the Undersiders’ retreat with Kenzie’s time camera, March’s team is after Parian and Foil.

Major Events

 * Breakthrough starts tracking the Undersiders.
 * The Undersiders are attacked by March's and and Faultline's Crew.

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Characters
! scope="col" |

Breakthrough

 * Victoria Dallon
 * Kenzie Martin
 * Tristan and Byron Vera
 * Rain O'Fire Frazier
 * Sveta Karelia
 * Ashley Stillons II
 * Damsel of Distress III (mentioned)

Advance Guard

 * Mapwright
 * Gong
 * Spright
 * Flapper

The Major Malfunctions

 * Withdrawal
 * Finale

The Undersiders

 * Tattletale
 * Hired mercenaries
 * Snuff
 * Imp
 * The Heartbroken
 * Chicken Little
 * Parian (mentioned)
 * Foil (mentioned)
 * She who shall not be named (mentioned)

Faultline’s Crew

 * Shamrock
 * Gregor the Snail
 * Faultline

March's Megacluster

 * March
 * Paris
 * Other cluster capes

Other associates

 * Lone Wolf Pack
 * The Shepherds
 * Moonsong

Targets

 * Bullhorn
 * Eclipse Arc
 * The Grower's Court

Mentioned

 * The Fallen
 * Chris Elman
 * Carol and Mark Dallon
 * Prancer
 * Hollow Point villains
 * Love Lost
 * Irene and Julien Martin
 * The kidnapped Thinker
 * Two other parahuman gangs
 * Another Brockton Bay crime-boss thinker
 * Leviathan
 * Weld
 * Crystal
 * }