Number 3 is the only one that Makes sense as in Kessler's timwline he showed Cole a vision where there was Ice too. Either forwshadowing that the Beast was ablw to control Ice or workong with someone who couls control ice (Kuo).
We need to have a petition to bring cole back theres so many unanswered questions. What happened to moya. What are the first sons where did Aldin tate go. We need to bring him back they killed a really good franchise but we can save it. We can be the voice and bring our cole back
There was an Infamous comic that explained that Moya died on a boat that was sinking. If I had to choose a resurrection for Cole, Nix and Kuo, it would be that the RFI temporarily make any Conduits whose powers were already activated unconcious for three years but, those whose powers weren't activated would still die. The reasoning behind this is when a Conduits powers are activated, they are shown to be very resilient so they would be able to withstand the RFI's power.