Assertive and Impartial

adjective

• Aggressively self-assured.
  • usage: "an energetic assertive boy who was always ready to argue"; "pointing directly at a listener is an assertive act"
  • synonyms: self-asserting, self-assertive

(a.) Positive; affirming confidently; affirmative; peremptory.

adjective

• Showing lack of favoritism.
  • usage: "the cold neutrality of an impartial judge"
• Free from undue bias or preconceived opinions.
  • usage: "an unprejudiced appraisal of the pros and cons"; "the impartial eye of a scientist"
  • synonyms: unprejudiced

(a.) Not partial; not favoring one more than another; treating all alike; unprejudiced; unbiased; disinterested; equitable; fair; just.