DigiXros Unit

The term "DigiXros Unit" refers to the various Digimon that serve as components of a DigiXros. Unlike DNA Digivolution, the DigiXros that results from a combination of Digimon depends only on its most basic DigiXros Units and not the immediate components. For example, the Shoutmon X4 DigiXros uses Shoutmon, Ballistamon, Dorulumon, and the Starmons as its basic DigiXros units; however, Shoutmon and Ballistamon can be replaced by Shoutmon X2, or Shoutmon and the Starmons by Shoutmon + Star Sword. When the same DigiXros Units produce a different DigiXros, for instance the five combinations of SkullKnightmon and Axemon, or Shoutmon Star Wheel, these variations are due to the will of the Digimon, and not any differences in their immediate components.

The Digimon Fusion anime and  manga generally use any combination of the "canon" DigiXros units to form the needed DigiXros. However, the Super Digica Taisen card and arcade game has a limit of three DigiXros Units, while for the Digimon Xros Loader toy, the limits depend on the Leader Digimon, with a max limit of five units. These limits restrict the combinations that can be used in the game; notably, both games have to approximate the DigiXros combination for Shoutmon X7, whose "correct" DigiXros Units are Shoutmon DX, Ballistamon, Dorulumon, the Starmons, and Sparrowmon. Super Digica Taisen uses Shoutmon DX Ｘ Shoutmon X5, Shoutmon DX Ｘ Shoutmon X4 Ｘ Sparrowmon, and OmniShoutmon Ｘ ZekeGreymon Ｘ Shoutmon X5, while the Digimon Xros Loader uses OmniShoutmon Ｘ Ballistamon Ｘ Dorulumon Ｘ Starmons Ｘ Sparrowmon.

Each act of Super Digica Taisen adds new DigiXroses that can be used in both the card and arcade game. The Data Carddas site lists all of the new DigiXros combinations for each act.

Shoutmon + Star Sword

 * Shoutmon Ｘ Starmons

Shoutmon X2

 * Shoutmon Ｘ Ballistamon

Shoutmon X3

 * Shoutmon Ｘ Ballistamon Ｘ Dorulumon
 * Shoutmon X2 Ｘ Dorulumon

Shoutmon X4

 * Shoutmon + Star Sword Ｘ Ballistamon Ｘ Dorulumon
 * Shoutmon X2 Ｘ Dorulumon Ｘ Starmons
 * Shoutmon X3 Ｘ Starmons

MetalGreymon (2010 anime)

 * Greymon Ｘ MailBirdramon

Shoutmon X4B

 * Shoutmon X3 Ｘ Starmons Ｘ Beelzemon (2010 anime)
 * Shoutmon X4 Ｘ Beelzemon (2010 anime)

MetalGreymon Cyberdramon

 * Greymon Ｘ Cyberdramon Ｘ MailBirdramon
 * MetalGreymon (2010 anime) Ｘ Cyberdramon

Shoutmon X5

 * Shoutmon X3 Ｘ Starmon Ｘ Sparrowmon
 * Shoutmon X4 Ｘ Sparrowmon

AxeKnightmon

 * SkullKnightmon Ｘ Axemon

DeckerGreymon

 * MailBirdramon Ｘ Greymon Ｘ Deckerdramon
 * MetalGreymon (2010 anime) Ｘ Deckerdramon

Omnimon

 * WarGreymon Ｘ MetalGarurumon

Shoutmon X4S

 * Shoutmon X4 Ｘ Spadamon
 * Shoutmon X3 Ｘ Starmons Ｘ Spadamon

Shoutmon X3GM

 * Shoutmon X3 Ｘ MetalGreymon (2010 anime)
 * Shoutmon X2 Ｘ Dorulumon Ｘ MetalGreymon (2010 anime)
 * Shoutmon X3 Ｘ Greymon Ｘ MailBirdramon

Shoutmon X3SD

 * Shoutmon X3 Ｘ AxeKnightmon
 * Shoutmon X3 Ｘ SkullKnightmon Ｘ Axemon
 * Shoutmon X2 Ｘ Dorulumon Ｘ AxeKnightmon

GreyKnightsmon

 * AxeKnightmon Ｘ MetalGreymon (2010 anime)
 * MetalGreymon (2010 anime) Ｘ SkullKnightmon Ｘ Axemon
 * AxeKnightmon Ｘ Greymon Ｘ MailBirdramon

Chaosmon

 * Darkdramon Ｘ BanchoLeomon

Shoutmon DX

 * OmniShoutmon Ｘ ZekeGreymon

Shoutmon X5B

 * Shoutmon X4B Ｘ Sparrowmon
 * Shoutmon X5 Ｘ Beelzemon (2010 anime)
 * Shoutmon X4 Ｘ Sparrowmon Ｘ Beelzemon (2010 anime)

Shoutmon X5S

 * Shoutmon X5 Ｘ Spadamon
 * Shoutmon X4S Ｘ Sparrowmon
 * Shoutmon X4 Ｘ Spadamon Ｘ Sparrowmon

MusoKnightmon

 * AxeKnightmon Ｘ Tuwarmon
 * SkullKnightmon Ｘ Axemon Ｘ Tuwarmon

Hi-VisionMonitamon

 * Monitamon Ｘ Monitamon Ｘ Monitamon

Paildramon

 * ExVeemon Ｘ Stingmon

Shoutmon X7

 * Shoutmon DX Ｘ Shoutmon X5
 * Shoutmon DX Ｘ Shoutmon X4 Ｘ Sparrowmon
 * OmniShoutmon Ｘ ZekeGreymon Ｘ Shoutmon X5

MegaDarknessBagramon

 * Bagramon Ｘ AxeKnightmon
 * Bagramon Ｘ SkullKnightmon Ｘ Axemon