Born in 1945 in Valencia, Spain, Royo began demonstrating his artistic talent early. At the age of 9 his father, a prominent physician and avid art enthusiast, employed private tutors to instruct Royo in drawing, painting, and sculpture. When Royo turned 14 he entered the San Carlos Royal Academy of Fine Arts in Valencia. In 1968 he began to exhibit in Spain, specifically Lisbon, Madrid and Barcelona. With positive reception of his works in Madrid, Royo received commissions to paint the royal portraits of King Juan Carlos and Queen Sofia.