A new video for the upcoming third season of "Agents of S.H.I.E.L.D." walks viewers through the details of Luke Campbell's (Luke Mitchell) ability to generate and manipulate electricity as well as introduces his new codename Sparkplug.

In the second season, Luke was introduced as a member of Jiaying's Inhuman society in Afterlife. When he realized Jiaying's plan in the season finale, however, he switched his allegiance and helped S.H.I.E.L.D. take down the rogue Inhuman faction.

Newcomer Lincoln, aka Sparkplug, saw a lot of action on Marvel's #AgentsofSHIELD. What exactly are his powers? We've got the answer right here:Posted by Agents of S.H.I.E.L.D. on Wednesday, September 2, 2015

"I think [Lincoln] is dangerous in the sense that they don't know whether they can trust him, and I don't think he knows what to trust," Mitchell revealed in an interview with CBR. "So I think it's rocky. I think their relationship is rocky. S.H.I.E.L.D. needs to play their cards right, and Lincoln needs to work things out pretty quick and smart."

Starring Clark Gregg, Chloe Bennet and Ming-Na Wen, "Agents of S.H.I.E.L.D." season three premieres Tuesday, September 29 at 9 pm EST on ABC.