Alpha

The Alpha Class was an exclusive class that you were only able to get for completing a survey of a question you had for the Beta Release Update, before the beta was released to the public.

Only a select few people have this class.

One of the Class's Abilities, Alpha Restore, is based off a mechanic from the old Alpha when you used to get 10 max HP and 10 HP every 10 rooms. It has an ability charge of 1. Though it's based off the alpha you can actually use the ability every Special Room, aka shop, lab, etc. Does nothing if you try to use it outside of a special room. When used, it says "You've had this feeling before..."

The other ability, Alpha Strike, has the ability to kill any non-alpha droid in the current room you are in. It has an ability charge of 5.

This class may actually come back as a very hard to find secret/challenge, according to Jei.