They are meant as placeholders until a fun NPC joins the party. You can then take that NPC as your character. This is the only way to get things like Krogan characters. All such NPCs are suitable for the quest and have fitting back stories.

You have 3 options to build the character:

• Select one of 350 point enchanced_templates, reduce DX and IQ by 1, take 8 point version of home world, basic_bionic_enchantment and use a total of 19 points from suggested_background_0-60 and basic_skills_background_0-60