Si Best Team Compositions

Si full artwork
Last updated on Oct 15, 2026 at 14:36 by ReinTenebrae

Si's Best Team Compositions & Character Synergies

Welcome to our Si team composition guide and character synergies overview for Arknights: Endfield. In this guide, we'll explore the best teams to build for Si, including recommended Operators, character synergies and team compositions to help Si reach his full potential.

The 13th Sui Proxy is here and ready to play - violently. While her listed role is Supporter, and she technically does have a couple of features that do support the team, you'll quickly find that her role in the team is more as a Sub-DPS. Or maybe even your Main DPS.

Best Pairings and Synergies With Si

Si's design is to either work with Cryo or Heat Strikers, or to strategically support Arts Reaction compositions.

Last Rite Laevatain Yvonne
Cryo & Heat Strikers

Operators that consume or absorb Cryo Infliction or Heat Infliction are required to trigger Si's Combo Skill. Naturally this means you will want to pair her with one of these Operators, and all of them are considered main DPS units.

Arcane
Arts Reaction

The other way to consume or absorb Cryo Infliction or Heat Infliction is by performing an Arts Reaction. Currently, the only meaningful Arts Reaction to push for high stack consumptions on is Corrosion. Arcane is by far the best option for this purpose.

Si's Best Teams

Listed below are a range of team compositions we recommend you use with Si. The inclusion or exclusion of any given team does not necessarily reflect their overall power level.

Team Slots Matter Si features mechanics that adjust based on her positioning in the team assignment menu. Her Battle Skill applies Cryo Infliction by default, but will apply Heat Infliction instead if the first member of the team is Heat. Additionally, she has a Talent for reducing the cooldown of the Combo Skill of the first member of the team after Si uses her Ultimate.

Please be wary of this when team building. Thank you.

Corrosion Strategem - Cryo Variant
Corrosion Strategem - Heat Variant
Heat Infliction Strategem
Cryo Infliction Strategem
Cryo Infliction Strategem
Budget Cryo Infliction or Corrosion Strategem
Budget Corrosion Strategem - Heat Variant
ReinTenebrae
ReinTenebrae
Guide Author
Follow ReinTenebrae

Rein Tenebrae is a passionate writer for Icy Veins, focusing on the Arknights: Endfield category. With a keen eye for tactical gameplay mechanics, character builds, lore breakdowns, and AIC factory optimization, Rein delivers comprehensive guides and strategies to help players thrive in the post-apocalyptic world of Talos-II. A fan of the Arknights universe since its January 2020 Global debut, Rein combines analytical insights with community-driven tips to keep readers ahead of the curve.

Changelog

  • 15 Oct. 2026: Registered to Tier List.
  • 14 Oct. 2026: Page added.
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