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Last updated: 17/July/2026
Introduction
Si is a 6-star character in Arknights: Endfield (AKE). Si wields a Unknown and belongs to the Unknown class. Si also has access to the Unknown element. This guide provides a comprehensive overview of Si's best build, including recommended Weapons, Gear pieces, Stats, and the strongest team compositions and rotations that maximize their potential.
Video guide
Si has no video guide yet.
Update tracker
Last review update
Not yet available
Last major build/calcs update
Not yet available
Last profile update*
17/July/2026
*Profile update means smaller edits to the guide that don't require new calculations.
To learn more about Si check the sections below. Use the tabs to quickly switch to the kind of information you're looking for - whether it's best build, teams, synergies or calculations.
Profile
The yellow color shows the Primary Attribute and the green Secondary Attribute. Both of those attributes, on top of their normal bonuses, provide additional ATK to the character.
Si attributes aren't available yet. They will be added soon!
Si skills are currently missing. They will be added soon!
Si Talents are currently missing. They will be added soon!
Si Potential information are currently missing. They will be added soon!
Si lore is currently missing. It will be added soon!
Review
Si ratings aren't available yet. It will be added soon!
Si pros & cons aren't available yet. They will be added soon.
Si review isn't available yet. It will be added soon!
Build
Si best Weapons aren't available yet. They will be added soon.
Si best Gear aren't available yet. They will be added soon.
Si gear pieces calculations aren't available yet. They will be added soon.
Si dupes reviews aren't available yet. They will be added soon.
Si calculations aren't available yet. They will be added soon.
Si skill priority information aren't available yet. They will be added soon.
Teams and Synergies
Si synergies aren't available yet. They will be added soon.
Si teams aren't listed in any specific order - so they're not listed best to worst or vice versa. Check our Team Tier List for more information about best teams.
Si team compositions aren't available yet. They will be added soon.