active_mock.rb

class ActiveMock
  class Character
    def self.new(params={})
      {
        first_name: ['Andrew', 'Bob', 'Carol', 'David', 'Evan', 'Fred', 'George', 'Henry', 'Isaac', 'Jacob', 'Luke'].sample,
        last_name:  ['Green', 'Brown', 'Blue', 'White', 'Red', 'Orange', 'Purple', 'Grey', 'Silver'].sample,
        age:        (1..100).to_a.sample,
        role:       ['Protagonist', 'Antagonist', 'Foil', 'Support'].sample,
        gender:     ['Male', 'Female', 'Other'].sample,
        eye_color:  ['Green', 'Brown', 'Blue', 'White', 'Red', 'Orange', 'Purple', 'Grey', 'Silver'].sample,
      }.merge(params)
    end

    def self.where(params={})
      (1..100).map { new(params) }
    end
  end
end

selected_characters = ActiveMock::Character.where({role: 'Protagonist'})