Operators are the characters used in battle by players in Arknights. Operators serve as "towers"; the player places Operators in locations around the battlefield to prevent enemies from reaching the objective.
Operators come in six rarities, denoted by a number of stars from 1 to 6.
Operators have many functionalities, ranging from directly fighting the enemy either with melee or long-ranged weaponry, using Originium Arts to attack the enemy with destructive magic, healing other Operators, or providing some form of offensive or defensive support.
There are two types of Operators: melee and ranged. Melee Operators are deployed on lower ground, or "melee tiles," while ranged Operators are deployed on higher ground, or "ranged tiles."
The majority of Operators are aligned with Rhodes Island, although some of them act as contacts or liaisons of their faction, mercenaries, or volunteers. This does not affect Operators' accessibility and usage during gameplay, however.
The following Operators are given as rewards, dubbed "welfare Operators", in limited-time events:
Obtaining duplicates of Operators the player already own will give the respective Operator's Operator Token instead, which can be used to improve the Operator's potential and traded for Commendation Certificates or Distinction Certificates once the corresponding Operator's potential is maxed out.
Operators' attributes are displayed on the left side of the Character Details page, above the character name.
As the Operator gain levels, their attributes will be increased. The attribute cap will be increased when the Operator is promoted.
Increasing the Operator's potential and Trust will also provide a bonus to their attributes.