"In general, Delta Combos are pretty strong. You really should put them in your deck if you can."

— Renji —

Delta Combos are special combination effects in Crimson VS. They are activated at the start of battle and have an added effect depending on the combo. Delta Combos are generally triggered by each unit card representing a different character that shares a special relationship with the other two. The chosen General doesn't matter, except that it needs enough charisma to form the combo.

Combos

Combo	Effect	Cards Used	Note
.hackers Combo	Subtracts 1 AP from enemy General	Balmung, BlackRose, Kite, Mistral, Orca, Natsume, Piros, Terajima Ryoko	Brute Force Combo, Triangle Combo II, and XXXX Combo override this.
3 Part Combo	Lowers enemy Unit cost by 3	Nala, TaN, Yata	None
AIDA Combo	Subtracts 5 HP from enemy General	AIDA-Infected Sakaki, AIDA-Infected Sirius, Ovan	Normal Sakaki and Sirius do not activate this combo.
Arena Combo I	Raises your unit cost by 3	Atoli, Haseo, Silabus	None
Arena Combo II	Adds 2 AP to your General	Alkaid, Atoli, Haseo	None
Arena Combo III	Adds 2 AP to your General	Endrance, Haseo, Kuhn	None
Avatar Combo	Subtracts 3 HP from enemy General	Azure Kite, any two cards that can form the Eight Phases Combo	None
Beast Combo	Add 3HP to Your General	Mia, Gabi, Sirius, Gaspard, Tan, Tabby, Phyllo	None
Brute Force Combo	Raises your Unit cost by 1	BlackRose, Gabi, Matsu, Mimiru, Orca, Piros, Sirius	None
Canard Combo	Lowers enemy Unit cost by 1	Atoli, Death Grunty, Gaspard, Haseo, Kuhn, Silabus	Arena Combo I overrides this.
Eight Phase Combo	Adds 1 AP to your General	Atoli, Endrance, Haseo, Kuhn, Ovan, Pi, Sakubo, Yata	Arena Combo III, G.U. Combo, Glasses Combo, Triangle Combo III, and Triangle Combo IV override this.
Emperor Combo	Lowers enemy Unit cost by 1	Alkaid, Antares, Endrance, Haseo, Sirius, Taihaku	Icolo Combo overrides this.
Eternal Number 2	Lowers enemy Unit cost by 2	Sakaki, Silabus, Silver Knight	None
G.U. Combo	Adds 5 HP to your General	Haseo, Kuhn, Pi, Yata	None
Glasses Combo	Cancels enemy General's Delta Combo	Ovan, Pi, Yata	None
Guild Master Combo	Raises your Unit cost by 1	Gabi, Haseo, Taihaku, Piros, Yata, Zelkova	None
Heroine Combo (A)	Raises your Unit cost by 1	Alkaid, Atoli, BlackRose, Tabby, Mimiru, Shino, Terajima Ryoko, Mai Minase	None.
Heroine Combo (B)	Lowers enemy Unit cost by 1	BT, Bordeaux, Bset, Sakubo, Kaede, Midori, Natsume, Mistral	None
Icolo Combo	Subtracts 1 AP from enemy General	Alkaid, Antares, Sirius, Taihaku	None
Intelligent Combo	Cancels enemy General's Delta Combo	BT, Ovan, Phyllo, Pi, TaN, Sakaki, Yata	Glasses Combo overrides this.
Main Character Combo	Raises your Unit cost by 1	Haseo, Kite, Mai Minase, Shugo, Tsukasa	None
Roots Combo	Adds 1 AP to your General	Gord/Bset, Haseo, Ovan, Phyllo, Shino, Tabby, TaN	Beast & Twilight Brigade Combos override this.
Sakaki Combo	Lowers enemy Unit cost by 1	Atoli, Hiiragi, Matsu, Sakaki	None
Seven Counsel Combo	Subtracts 1 AP from enemy General	Kaede, Hiiragi, Matsu, Nala, Sakaki, Zelkova	Sakaki and Zelkova Combos override this.
SIGN Combo	Adds 1 AP to your General	BT, Mimiru, Silver Knight, Sora, Subaru/Tsukasa	None
Triangle Combo I	Raises your Unit cost by 2	Atoli, Haseo, Shino	None
Triangle Combo II	Lowers enemy Unit cost by 2	BlackRose, Kite, Terajima Ryoko	None
Triangle Combo III	Adds 2 AP to your General	Atoli, Haseo, Pi	None
Triangle Combo IV	Subtracts 2 AP from enemy General	Endrance, Haseo, Sakubo	None
Twilight Brigade Combo	Raises your Unit cost by 1	Gord/Bset, Haseo, Ovan, Shino, Tabby	None
XXXX Combo	Cancels enemy General's Delta Combo	Balmung, Cubia, Kite, Orca, Shugo/Rena	Azure Kite does not activate this combo.
Zelkova Combo	Adds 5 HP to your General	Zelkova, Nala, Kaede	None