I realised that I've read and reviewed this before as Volume 1 of the digital series.
Zach Thompson is Techjacket, the self-styled “galactic guardian of Earth”, who protects the Earth from aliens. As he encounters a formidable foe, we glimpse at flashbacks at how he became a hero. Meanwhile a billionaire is after his tech. A lot of space action and fighting ensue.
Entertaining and enjoyable, this light-hearted traditional super-hero story is worth a look – reminiscent of Marvel's Nova (from what I can remember). Engaging with clear good illustrations.