Bots are the computer controlled characters in the arcade matches of the TimeSplitters series. You can have up to ten in one game. You can control which character they are, the amount of their stars, which team they're on, and whether or not they're playing. Bots do have limitations, however. They cannot man gun emplacements, nor can they ride in vehicles. They also cannot activate levers. For example, they cannot cause the trains to come in the Subway area. They can, however, toggle switches in Mapmaker Assault mode maps if toggling the switch is an assault objective. "Bots" are not to be confused with Story AI, which are only available in Mapmaker Story mode.
The game's default star value for a bot is the default Bot Skill.
Bot Skill changes the reaction time and some 'AI exclusive' features of the character. 3-5 Star bots will roll, duck shots that could hit their head and perform other animations that can make them unpredictable. Low-skill bots will also take noticeably longer to fire on a target after seeing them, while high-skill bots can and will shoot almost instantly after sighting an enemy. It also determines how fast an AI will shoot at distance; Lower-star bots will shoot fairly slowly at a distance, generally increasing their fire rate as their target gets closer, while higher-star bots will shoot at maximum ROF no matter the distance. There are no dynamic changes to intelligence (Such as seeking health kits or better weapons) and stamina, accuracy and speed are unchanged. Character Abilities do not exist so unique ratings for each Character must be set by the player.
Bot Skill determines the intelligence, stamina, accuracy, and overall difficulty of defeating a bot. The Bot Skill is a measure on a star scale of 1 (pathetic) to 5 (awesome). For example, a 1-star bot will be slow to react to being shot and will die fairly quickly. In contrast, a 5-star bot is difficult to shoot at from behind due to their quick reaction time, and they will often perform dives and other dodges to avoid fire. 5-star bots have a large amount of stamina and, due to their advanced "intelligence", will often run to retrieve a Health Pack when near death. Bot Skill values can only be changed when Character Abilities, are turned off.
In TimeSplitters 2 there are three gameplay settings to choose from which further determine the difficulty of the artificial intelligence beyond the star-rating of individual characters. These are the Chilled, Normal and Frantic settings. These settings determine the overall difficulty of both an arcade match against Bots and a story mode mapmaker map against Story AI. While these settings do influence the difficulty of story mode mapmaker maps, the difference between the settings is most apparent within arcade matches, where in Frantic the multiplayer bots never flinch when fired upon (Story AI on Frantic will continue to flinch for fairly easy kills against them).
TimeSplitters Future Perfect uses the same bot method as TimeSplitters 2 except there are no gameplay settings. It is interesting to note that most returning characters in TSFP do not have the same Bot Skill rating as they did in TS2. Perhaps the most extreme example of this would be The Master, who went from having a 1-Star Rating in TS2 to having a 5-Star Rating in TSFP. Others, such as Robert One-Oh-Seven, Jacque de la Morte and Gingerbread Man also experienced radical changes, though some, such as Viola, Duckman Drake and Snowman, remained the same.