"Making something... Nurturing something is really great. You can see and learn so many things from the process."
A halo (天使の輪, tenshi no wa) is a ring of energy that appears in association with (usually directly above) Angels and Evangelions in the Rebuild continuity. The only Angels that have not displayed halos so far are the 7th (although the halo-like rings on its hips might qualify) and the 10th.
Some of the appearances seem arbitrary, but in general the halos accompany feats of levitation or other assisted movement, or manifest at moments when great innate power is unleashed. Gendo is seen to levitating over what appears to be a device similar to a halo in Evangelion 3.0.
In Neon Genesis Evangelion
Halos are a Christian visual motif associated with angels and holy figures (such as Jesus Christ). Before they were stylized into a floating ring, they appeared in art as a circular aura from behind.[Source needed]