The Defect is the fifth and final character in Slay the Spire 2 — a combat automaton that became self-aware, wielding ancient technology to manipulate elemental Orbs. It is unlocked after completing a run with the Necrobinder.
Unlock Chain: Ironclad → Silent → Regent → Necrobinder → Defect
Unlock Defect by completing any run with the Necrobinder. → All Defect cards · All Defect relics
Starting Stats
| Stat | Value |
|---|---|
| Starting HP | 75 (56 on Ascension 2+) |
| Starting Energy | 3 |
| Starting Deck |  Strike ×4 ·  Defend ×4 ·  Zap ×1 ·  Dualcast ×1 |
| Starting Relic |  Cracked Core — At the start of each combat, Channel 1 Lightning Orb |
The Defect is the most mechanically complex character in Slay the Spire 2. Its toolkit revolves around Orbs — elemental constructs that generate passive effects every turn and trigger powerful Evoke effects when displaced. On Ascension 2+, starting HP drops from 75 to 56.
Orb Mechanics
The Defect Channels Orbs into slots and can Evoke them to trigger their active effects. Each Orb has a Passive (triggers every turn) and an Evoke (triggers when the Orb is displaced by a new Channel or manually Evoked):
| Orb | Passive (per turn) | Evoke (when displaced) |
|---|---|---|
| Lightning | Deal 3 damage to a random enemy | Deal 8 damage to ALL enemies |
| Frost | Gain 2 Block | Gain 5 Block |
| Dark | Accumulate damage | Deal ALL accumulated damage to one enemy |
| Plasma | Gain 1 Energy | — |
Focus increases the power of all Orb passive and Evoke effects. Stacking Focus through 
Defragment and other Power cards is the core scaling strategy for Orb-based builds.
Build 1: Claw Deck
Spam zero-Energy cards — especially 
Claw — cycling the deck to deal massive cumulative damage.
Core Strategy: Stack multiple copies of Claw early (each Claw in the deck permanently buffs all Claw damage by +2). Cycle with 
Scrape, 
FTL, and 
Hologram to play Claw many times per turn. 
All for One refills your hand with zero-cost cards from the discard pile.
Key Cards
Best Relics: 
Power Cell (adds zero-cost cards to hand each combat) · Nunchaku / Shuriken / Kunai (all proc on card spam)
Tips
- Don't take every zero-Energy card — you need to hit Claw regularly; deck bloat slows cycling
- Add a few Frost Orbs as passive Block; essential coverage in an otherwise defense-light Claw deck
- Upgrade Hologram to remove the Exhaust — lets you recycle key cards indefinitely
Build 2: Orb Deck (Lightning + Frost)
Cycle Orbs for consistent passive damage and Block, then close fights with Focus-amplified Evoke bursts.
Core Strategy: Channel Lightning and Frost Orbs each turn for passive damage and Block. Defragment amplifies every Orb hit and Evoke. With additional Orb slots from 
Capacitor, Dark Orbs can accumulate massive damage behind a Frost wall.
Key Cards
Best Relics: 
Emotion Chip (extra passive triggers off damage taken) · 
Gold-Plated Cables (rightmost Orb triggers twice) · 
Metronome (free AoE 30 after 7 Channels) · 
Data Disk (1 Focus every combat)
Tips
- Cycling Orbs by Channelling new ones auto-Evokes them — no need to manually Evoke every turn
- High Focus + multiple Channel effects per turn is the core Orb win condition
- For a defensive variant: expand Orb slots with
Runic Capacitor and draft Frost Channel cards; Dark Orbs can accumulate behind Frost walls
Unique Relics
Unique Potions
Act-by-Act Checklist
| Act | Focus |
|---|---|
| Act 1 | Commit early: grab Claw ×2+ (Claw deck) or Defragment + Coolheaded (Orb deck) |
| Act 2 | Add control/Focus cards; look for Gold-Plated Cables or Metronome |
| Act 3 | Lock in finisher (All for One or Multi-Cast); refine Orb Channel count |
| Act 4 | Maximize Focus; ensure Block from Frost Orbs or passive Frost in Claw deck |