A support hero with a mixed bag of tricks.
His weapon is the Technician Wand, flat damage with a damage pop when ammo runs dry on every enemy hit with that ammo clip. Looks like energy is softly diffusing out of targets.
Alt fire is Restraint, single target, inflicts 105 damage over 2 seconds and halves damage output in that time, 12 second cooldown once completed. Looks like a wire-frame over the body.
E is Vitaliser; build a small machine that tops up ally health nearby. It refills from nearby health kits slowly or with the Wand. Vitaliser looks holographic, healing looks like a gentle energy streak that flows into the body. It heals your teammates before it heals you.
Shift is Change Gears, which affects Rescue's behaviour (see below) the options are Loyal, Good Boy and Angry Boy.
Passive is Rescue, the intangible super-fast hologram dog that exists to make your job easier, with a healing reserve and properties that vary with Gears. Loyal makes Rescue stay close, heal you above others, prioritise attacking enemies in Restraint then your aggressors. The gear skill is Revenge, savaging an enemy after your death.
Good Boy makes Rescue prioritise filling the Vitaliser/himself, healing allies manually and using his Gear skill, Repel. Repel is a shield that Rescue will project to block nominal damage when an ally is attacked. Healing and Repel (in that order) are prioritised for critical allies.
Angry Boy makes Rescue attack enemies in range. Rescue will prioritise critical health enemies. The gear skill is Rage, which makes Rescue hold on to an enemy for a little bit longer than normal and his DPS is slightly higher.
Ultimate is "Eureka!" Rescue splits into 3, one for each Gear. The Wand and Vitaliser get buffs. Restraint is reset.