Isabella, who has a crush on Phineas, he has a crush on Patricia, but she is unaware of his feelings. He has found a kindred spirit in Isabella, and at times help each other in pursuing their crushes.
Issac was born in Portugal, Spain. At age 6, he was abducted, but he managed to jump off the airplane in Samoa there. Two years later, he met The Waterfront Girls, who were stranded during a trip to America. They formed a tribe called The Waterfront Islanders.
Meeting the Girls
He first appears in the TV movie "Phineas and Ferb's World Adventure" when Phineas, Ferb, Isabella, Patricia, Florence, The Fireside Girls, and the Regurid orphans are captured by The Waterfront Girls from Berlin, Germany, who have been stranded there since an airplane trip to America. He falls in love with Patricia, so they decide to tag along with them. They help them when they are about to reach Tokyo when the Waterfront Girls tag along with Fumi and Fuji. In the end, they are adopted by two African-Amercian parents.