Venus is also known as, "The Goddess of the Earth". In Golden Sun, Venus represents the element, 'Earth'. Isaac and Felix are both adepts of this element. Venus Djinn give high HP boosts when Set, as if to represent how the ground is hard to penetrate. The Venus element also shares ties with the Mars element, which is why Saturos and Menardi regained their power after the lighting of Venus Lighthouse at the end of Golden Sun.
Venus is also the name of the basic Venus elemental summon. Gained automatically, it costs one Venus Djinn and it's appearance is a Venus Djinn popping up and attacking the enemy. If Venus is the first summon cast, then the caster's Earth Power will rise by 10 for the battle.
Related Threadsvenus in canser! - last post by @ Apr 12, 2002
Venus - last post by @ Jul 31, 2007
Blue Hair Ursula and Gothic Black Hair Venus hacks - last post by @ Jul 3, 2007
How do i get hacked characters such as Venus with all S? - last post by @ Mar 16, 2007
Need hacked Venus and Eva! - last post @ Mar 3, 2007