Chewbacca
Chewbacca is the only hero who has the bowcaster in the game. This does splash damage as I is explosive and does a lot of damage against any enemy but is better at taking on small groups of enemies as the fire rate is pretty slow. You can also choose to charge it up, so that you fir 5 volts but otherwise it will fire 3 bolts. I would recommend just sticking to 3 blots and charging it up for an enemy around the corner or if they are behind cover and might peek out. His furious bowcaster ability makes it so that for a limited time his bowcaster shoots 5 shots without the need to charge so that the fire rate it increased and he fires more shots. This is incredibly good against groups of enemies as he can output a lot of shots but is amazing against heroes as it does so much damage. Lightsaber heroes can't block the bowcaster so you should target them as they can't do a lot against you at medium range. His shock grenade is great against enemy heroes as well because you can shock multiple of them and get some really easy headshots. This makes it even harder for other heroes to kill you as with furious bowcaster and a stun grenade there's not a lot enemy heroes can do other than find cover and wait it out. On regular soldiers its not as useful except for choke points where you can throw it in and shock a team, so that your team can push up on them. His slam ability is great for clearing out enemies and knocking back enemies heroes but does leave you vulnerable, so use it against a small group of soldiers to minimise damage. This as an escape as you can knock them down and run or to attack as you can run in and slam, followed up by a shock grenade. You can also slam on the spot by umping first and the slamming mid air to do it on the spot.