Not much is known about Javier's childhood. He was formerly a Triple-A Baseball player and played alongside such baseball greats as Sammy Sosa and Mark McGwire.
Javier is implied to be very adventurous and have had many connections to important people because of his travels. Gloria says that because he is Colombian, he can be very persuasive ("Up All Night"). Gloria says that Javier is passionate and romantic, traits which Manny inherited.
Jay complains that people think Javier is cool and exciting but he only sees a "dad who doesn't show up". In speaking of his responsibilities, Javier states that "life is an adventure" and that he lives "in the now", which annoys Jay who was constantly the one who comforts Manny when his father flakes out.