Liam: OKAY, maybe my nanotech isn't THAT advanced but I'm pretty sure my core is more advanced!
*His chest starts shifting and opens up, he pulls out a sphere shaped object with energy crackling from it*
*Various tubes and wires are connected to it*
*terra simply pulls out a transparent tube about the size of a soda can with a small bit of green energy glowing inside of it*
Terra: although it's a bit less flashy, it can last for thousands of years at a time. It's also a lot harder to track since it isn't actively generating power
Liam: Mine uses the energy of a star! It can generate power of hundreds of thousands of years! It's so powerful it produces radiation! If a human were to stand near it, he would suffer lots of pain.
Sap in the background: You're able to harness the power of a star but not able to make advanced nanotech *laughs*
Terra: ... Anyway. First of all, that's a threat to the safety of anyone standing near you. Second of all, the energy of a star is pretty damn easy to track. If someone wants you dead, they WILL find you.
Usually they are pretty long, but they end up looking far more natural by the time you attach them to the torso and arms, so I never really payed attention to it.