This is the tier list for Arknights global, which was released Jan 16th 2020.
Special thanks to Kyo for compiling the info:
Please visit his awesome channel for more Arknights info.
Here is the legend for the tier list:
- S - Top Operators
- A - Strong Operators
- B - Good Operators
- C - Decent Operators
- D - Normal Operators
- Specialist - Useful in certain situations
The tier list also takes into consideration the max level of the operator alongside their skills they provide. We have grouped the units based on their class below for the summary.
Snipers (Single Target)
Exusiai (6★, S)
- Strong Burst Damage
- Increase attack damage and max life of herself and random ally
Blue Poison (5★, A)
- Magic Damage
- Multiple target skill
Platinum (5★, A)
- Long attack range
- Slower, powerful shots
Meteor (4★, B)
- Reduce enemy's armor
- Strong damage against air units
Kroos (4★, C)
Jessica (4★, C)
- Good defense
Adnachiel (3★, D)
Rangers (2★, D)
Firewatch (5★, Specialist)
- Good burst damage
- High attack and long range
- Hidden effect
Provence (5★, Specialist)
- Small attack range
- Higher damage when close range
Sniper AoE
Meteorite (5★, A)
- Strong burst damage
- Reduce enemy's armor with S2
Shirayuki (4★, A)
- Magic damage
- Slow enemy with S2
- Long attack range
Caster Single Target
Eyjafjalla (6★, S)
- Good damage
- Buff all caster
- Weaken enemy magic resist
- S3 multi target
Amiya (5★, A)
- Burst damage
- True damage on S3
- Fast charge skill after E2
Haze (4★, C)
- Weaken enemy magic resist
Steward (3★, C)
- Attacks enemy with the highest armor
Durin (2★, D)
Caster AoE
Ifrit (6★, S)
- 5 tiles straight line attack
- Explosive damage
- Reduce enemy magic resist
Skyfire (5★, A)
- All blocked enemies receive more magic damage
- Stun on S2
Gitano (4★, B)
- Random permanent bonus at depolyment
- S2 has longer attack range
Lava (3★, C)
12F (2★, D)
Guard Single Target
SilverAsh (6★, S)
- Good damage
- Large attack range
- Cancel enemy's hidden effect
- S3 multi target
Lappland (5★, A)
- Large attack range
- Magic damage
- Cancel enemy's special ability
Franka (5★, B)
- Burst damage
- True damage
- Highest attack
Matoimaru (4★, B)
- Burst damage
- Heal herself
Melantha (3★, B)
- Easy to level
- High attack
Indra (5★, B)
- Dodge physical damage
- Ignore armor
- Magic damage
- Recruit exclusive
Frostleaf (4★, B)
- Large attack range
- Slow enemies
- Can freeze enemies
Mousse (4★, B)
- % to combo
- Enemy attack debuff
- Normal attack is magic damage
Dobermann (4★, C)
- Good damage
- Buff to 3 star operators
Guard AoE
Specter (5★, A)
- Self heal
- Immortaity
- High survivability
Savage (5★, B)
- Strong burst damage
- Exclusive reward from pre-registration
Estelle (4★, B)
- Self heal
- Recruit exclusive
Castle-3 (1★, Specialist)
- Attack and armor buff to all allies for 10 seconds after deployment
Tank (Defender)
Hoshiguma (6★, S)
- S3 AoE burst damage
- S2 rebound damage
- Buff to all defenders
Liskarm (5★, A)
- Can stun enemies
- Magic damage
- Charge ally's skill points when get hit
Croissant (5★, A)
- Can stun and knock enemies
- % immune to attacks
Cuora (4★, A)
- S2 can block 4
- Self heal
- High armor
Matterhorn (4★, B)
- High magic resist
Beagle (3★, C)
- Barrier
Noir Corne (2★, D)
Medic Tank
Saria (6★, S)
- AoE heal with S2
- Give 1 skill point to healed ally
Nearl (5★, A)
- Healer
- Buff to heal effect
Gummy (4★, B)
- Healer
- % stun to enemies
Cardigan (3★, D)
- Self heal
Vulcan (5★, Specialist)
- S1 become tank and can block 4
- S2 become fighter with AoE damage
- Can't be healed
- Self heal
- Recruit exclusive
Vanguard (Skill CP)
Siege (6★, S)
- AoE damage with S2
- Buff to all vanguard
- Charge skill points when enemy die nearby
Texas (5★, A)
- AoE stun
- If in team, you will start the game with 1/2 extra cost
Zima (5★, A)
- Herself cost-1
- At E2, all vanguard's cost-1
- S2 give buff to all vanguards
Scavenger (4★, B)
- Buff if there are no allies nearby
Courier (4★, B)
Vanilla (3★, C)
Fang (3★, C)
- DP recovery
Yato (2★, D)
Vanguard (Kill CP)
Vigna (4★, B)
Plume (3★, C)
Medic Single Target
Shining (6★, A)
- Physical damage shield
- Increase nearby ally armor
Silence (5★, A)
- Increases medic's attack speed
- Summon heal drone
Warfarin (5★, A)
- Gain skill points if enemy dies in her attack range
- Attack buff with S2
- Emergency heal
Myrrh (4★, B)
- Insta heal on deployment
- Skills allow her to heal an extra ally
Gavial (4★, B)
- Buff on deployment
- Sustained heal with skills
Hibiscus (3★, C)
Ansel (3★, C)
Medic Multi Target
Nightingale (6★, S)
- Magic damage shield
- Summon Phantom
- Increase nearby ally's magic resist
Ptilopsis (6★, S)
- Increase all ally's skill points charge speed
- Burst heal with S2
Perfumer (4★, B)
- Global heal per second
Lancet-2 (1★, Specialist)
Supporter Crowd Control
Angelina (6★, A)
- Attack speed buff to all ally
- Global heal per second
Istina (5★, B)
- Good single target slow down
Earthspirit (4★, C)
Orchid (3★, D)
Supporter Buff/Debuff
Pramanix (5★, A)
- Reduce enemy attack speed, armor and magic resist
- Attack enemy in her attack range will receive extra damage if under 40% hp
Sora (5★, A)
- Big attack buff to all ally in her attack range
- Enemy sleep cc (stun but invincible)
Supporter Summon
Mayer (5★, A)
- Summon mecha otter
- Burst damage
- stun
Deepcolor (4★, C)
- Summon tentacles
Specialist Utility
Red (5★)
- Fast revive
- Stun
Gravel 4★
- Fast revive
Specialist CC
Manticore 5★
- Hidden effect
- Slow down
- Stun
Specialist Push Pull
Feater 5★
- Push enemies
- Slow down
Shaw 4★
- Push enemies
Cliffheart 5★
- Pull enemies
- Stun
Rope 4★
- Pull enemies