Borderlands: The Pre-Sequel combines shooter and RPG play with character skill trees and moon-specific systems. The supplied passages describe four base-game classes, each with three named trees, and summarize selected class abilities and tree focuses. They also describe cryogenic weapons, which can slow or freeze enemies, and O2 kits, which supply air and support movement and ground slams. The class records include Athena’s Kinetic Aspis, Wilhelm’s Wolf and Saint drones, Nisha’s Showdown, and Claptrap’s VaultHunter.exe. Jack the Doppelganger and Aurelia the Baroness appear in the passages as additional DLC characters, so their records are labeled separately. This is a factual reference to stated effects, not a build ranking or current meta assessment.
If you are choosing among the four described base-game classes, start with their signature abilities and stated combat roles: shield, drones, gunplay, or variable effects.
Athena: Kinetic Aspis and Phalanx Tree Wilhelm: Wolf and Saint Nisha: Showdown Claptrap: VaultHunter.exeIf you have chosen a class, compare its named tree summaries to see the stated emphasis on melee, defense, weapon use, or cycling subroutines.
Athena: Xiphos Tree Wilhelm: Dreadnought Tree Nisha: Fan the Hammer Tree Claptrap: Fragmented Fragtrap TreeIf you want to understand the described non-class systems, review cryogenic effects and O2 kit functions, including their stated interactions and uses.
Cryogenic weapons O2 kitsChoose a topic to see how it works, where it helps and what to consider.
Athena throws her Kinetic Aspis shield to damage enemies; the Phalanx Tree emphasizes strengthening it and adding defensive support for her and her team.
Understand this choiceAthena’s Xiphos Tree focuses on powerful melee attacks and an exclusive damage-over-time ability, according to the class overview.
Understand this choiceAthena’s Ceraunic Tree focuses on maintaining elemental damage-over-time effects on enemies to take advantage of Maelstrom stacks.
Understand this choiceWilhelm summons Wolf and Saint drones; Wolf attacks enemies, while Saint provides Wilhelm with shields and health regeneration.
Understand this choiceWilhelm’s Dreadnought Tree focuses on keeping the player and team alive, improving Saint, and keeping the drones active.
Understand this choiceNisha’s Showdown automatically aims at enemies; the gameplay description says it also increases gun performance for the duration.
Understand this choiceFan the Hammer focuses on keeping guns loaded and gives a stated advantage to pistols and non-elemental weapons.
Understand this choiceClaptrap’s VaultHunter.exe generates effects based on the situation; its effects can help or harm Claptrap and party members.
Understand this choiceFragmented Fragtrap uses cycling subroutines that provide stat benefits while sacrificing some other stats.
Understand this choiceCryogenic weapons can slow and freeze enemies; frozen enemies take increased explosive, melee, or critical damage and shatter when killed.
Understand this choiceO2 kits supply air in space, support double jumps, hovering, and ground slams, and vary in stat bonuses and ground-slam effects.
Understand this choiceThe Doppelganger summons digital copies of himself called digi-Jacks, and his skill trees mainly grant bonuses to himself and those copies.
Understand this choiceAurelia’s homing ice shard cycles between enemies as they are killed; her trees enhance the shard, increase cryo damage, or assign a teammate as servant.
Understand this choiceThe class overview describes four announced classes, while the other passage identifies Jack and Aurelia as additional playable characters released as DLC.
The supplied descriptions say its effects are random and can be positive or negative for Claptrap and party members; they do not identify a guaranteed outcome.
The passage says different O2 kit types can provide stat bonuses and affect ground-slam damage, but does not specify variants or values.
A source-bounded reference to named class abilities and skill trees, cryogenic weapon effects, O2 kits, and two DLC character abilities. It does not establish exact costs, values, acquisition details, comparative effectiveness, or current balance.
Explanations prepared with GPT-6 Luna and checked against the linked references. These are source-reviewed guides. They do not establish independently tested optimal builds or exact upgrade budgets. How coverage works.
