ehhhh, my oc Zenith has multiple ways of dealing with criminals and other bad guys, but here are the main ways:
1. Astrocosmosis sword: in early versions, the sword is just a "normal" sword with a brutally sharp edge, so basically he goes swishy swoosh until the target turns into a whole puzzle piece; for later versions, i.e. ones where the sword gets flying capability due to thrusters, the sword can simply be sent out and let it impale through the chest, head, or other part of the target, or hit a part of their vehicle such that it causes the vehicle to stop (if killing the criminal is not necessary)
2. Pulsar Beam: it's a gun that fires a liquid at ludicrous speed and a temperature of 50000°C... basically anything that it hits will just have a massive hole from the melted skin, metal, etc
3. Portable Gamma Ray Burst: as an upgrade to the Pulsar Beam, it can shoot out the same liquid as before (albeit at a lower size) but can also shoot out, well, a miniature form of a gamma ray burst, meaning that if someone gets hit by one the radiation will cause all kinds of weird stuff to their skin, ranging from mutation to straight up degradation, however he usually just fires the normal liquid since the GRB has a risk of contaminating nearby areas so he mostly uses it in space
either way, in the end it's just a fictional character who was given the right to kill, and kill bad guys he does
