If a player uses a character with Steal Energy as a trait as there Amalgam, can the equiped character use steal energy? Are powers granted by traits considered to be part of your dial.

EVERY PERSON I KNOW IS AN AMALGAM OF TWO FROM YOUR UNIVERSE?: When building your force, you may pay 25 points and put a standard character on your sideline, called an Amalgam. At the beginning of the game, equip the Amalgam to a standard friendly character (other than Nightlantern) that is higher points than the Amalgam's highest point value and link it to that character's dial. For the rest of the game, the Amalgam provides the below effect when equipped: EFFECT: At the beginning of your turn or when when this character is clicked, you may choose a standard power on the equipped dial. This character can use that power until your next turn or clicked.

A trait is noted on the character's base/card. Neither of those are the dial.

If a special power grants the use of a standard power, can that standard power be chosen by Nightlantern's amalgam?

No, if an effect is looking for a power "displayed on a dial/click", it's basically only looking at what color squares are printed in the slots. If it said "can use on that click", or something along those lines, then it would be able to choose a standard power granted by a special power.