CP9 is one of the most memorable antagonist factions in One Piece history, and OP-18 gives them their own thematic identity as the Knights of God.
For collectors, that means a dedicated pool of villain-aligned cards built around one of the story's most stylistically distinct groups.
Since full card-by-card details are still emerging ahead of the set's November 2026 release, it is worth separating what's confirmed from what's reasonable speculation.
Here is what to know about collecting the Knights of God theme in OP-18.
CP9 is a secretive assassination unit operating under the World Government during the Water 7 and Enies Lobby arc, notable for members with unusual devil fruit powers and a distinct, formal combat style.
Their role as the arc's primary antagonist group makes them a natural fit for a dedicated thematic identity within a set built around this exact storyline.
Knights of God is the specific branding OP-18 uses for this antagonist theme, tying directly into the set's own subtitle, Water Seven and the Knights of God.
This kind of thematic renaming for card-game purposes is common practice across trading card games and does not change the underlying story identity of the characters involved.
Saint Shamrock, one of OP-18's two Yoshitaka Amano Secret Rares, is directly tied to the Knights of God faction, giving this theme its own headline chase card alongside whatever standard-rarity support it receives.
That connection makes Saint Shamrock a natural centerpiece for anyone building specifically around this theme rather than just chasing it for the crossover art alone.
Beyond Saint Shamrock's confirmed tie to the Knights of God theme, the full list of CP9-aligned cards in OP-18 has not been officially published in complete detail as of this writing.
Treat any specific claim about individual CP9 member cards beyond what's officially confirmed as speculative until Bandai's full card list or verified previews are available.
Given CP9's story reputation for coordinated, high-mobility combat, a Knights of God-themed deck could reasonably lean toward an aggressive or tempo-oriented playstyle once full card text is revealed.
That is a reasonable early guess based on the characters' story identity rather than a confirmed mechanical direction, so hold off on committing singles budget to this theme until real card text is public.
Fans of CP9 specifically may want to collect this theme purely for its connection to a fan-favorite antagonist group, independent of how strong the deck ends up being competitively.
That kind of character-driven collecting is a completely valid approach and does not require waiting on tournament results the way a competitive deck-building decision would.
As more of OP-18's card list becomes public ahead of the November 2026 release, dedicated One Piece TCG trade press and the official game site are the most reliable sources for confirming the Knights of God theme's full roster.
Waiting for that confirmation before making major purchasing decisions protects you from buying singles based on early guesses that later turn out to be wrong.
A faction being thematically compelling, like CP9's reputation within the story, doesn't automatically translate into every card tied to that faction being competitively strong in the actual game.
Evaluate Knights of God cards on their individual merits once full text is available, rather than assuming story prominence guarantees mechanical power.
Villain-aligned cards often develop a dedicated following independent of competitive strength, since collectors drawn to a specific character or faction's story presence value ownership over raw playability.
CP9's distinct visual design and combat style within the story make Knights of God cards a reasonable bet to attract this kind of character-driven collecting interest regardless of how the theme performs competitively.
It's the set's own branding for the CP9 antagonist faction from the Water 7 arc.
Saint Shamrock, one of OP-18's two Yoshitaka Amano Secret Rares.
Not in complete detail as of this writing -- treat specific member-card claims as speculative until confirmed.
Yes, for fans of CP9 specifically, character-driven collecting doesn't require competitive results as validation.
Whether you're collecting for the story or hoping for a strong competitive deck, protecting your OP-18 pulls from day one keeps your options open either way.
EVORETRO's PET Protectors are an easy, budget-friendly way to keep a sealed OP-18 box safe while the full Knights of God reveal rolls out. Check out the One Piece Booster Box EVORETRO PET Protectors (English, OPP 4-6, 0.40mm).
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