Possible Clues:

• Native American protagonist living mostly under cover, initially
• Romantic hero keen to hide American
• Jeep model
• Brave Nordic hero keeping near the centre
• Language written with an 85-character syllabary
• Native American
• Charlie Champion anxious to disregard final part as Native American
• Member of a Native American people
• Member of a tribe of Iroquoian Native Americans
• Iroquoian tongue