1. Octane - Whether I am bored or feel like dropping bodies, I can always count on octane to make any game fun. His agility to move faster and jump higher than other legends makes him an all around legend to use. His stem shot speeds up any slow moments in the game from going to one named location to another or simply chasing down all three members of a team to down them much faster. The jump pad is fun to use and even more fun to just throw around random places, it charges fast so I can throw them as soon as I get them and it makes games very enjoyable.
2. Wattson - I can always guarantee a 90% success in getting to top 3 with Wattson as she is amazing at holding down areas on the map. She can easily deny an enemy entrance into the circle by stalling them or stunning them, giving you and your team a heads up and an advantage as they will be have less health/shields than you. Her passive is amazing and lets you put down free shields for your team at any moment, which is great if you are camping up high and want to take peak-shots at players passing. Overall she is fun to use and the amount of things you can do with her fences are just endless. She is 2nd however because she lacks the speed to move around the map.
3. Mirage - This bad boi is my go to for when I just want to mess with enemies and see who the scrubs vs pros are. I love throwing his decoy as soon as it charges back up and more when I am looting. Enemies can't tell the difference between two standing mirages so it leaves a 50/50 chance of avoiding damage. Not only that, with a gold helmet, you are able to throw out two before the first decoy vanishes which can really fool an enemy player into wasting half a clip. His ult is fun to pop during fights as it makes the enemy waste time looking for you while your team fires away at their backs. Fun legend, can always count on him trick and bamboozle players and help my team figure out where enemies are and that is why he is 3rd.
4. Pathfinder - 4th because I only like using him as he provides a faster way around the map and I can help out any struggling teammates catch up. Otherwise, his grapple feels ok but I would rather just throw a decoy or set up a fence or even allow myself to move around faster. I'm a team player when I play Pathfinder, nothing else because it just seems like doing the most.
5. Caustic - big boi since day one, and was my favorite until Wattson came along. I love the use of his gas barrels to be able to block off tight corners or simply block a door. His tact recharges at a nice rate to allow for you to set up traps over a wide area fast, the ult comes in handy when you want to revive teammates so that enemies don't get close or see you. His abilities may hinder the team at times but if you are careful enough, you won't need to worry. The reason he is last however is simply because he lacks team play vs the other 4 legends I have above. His abilities are better suited for ambushes (3p or camping) and not for full head on engagements as throwing gas down will also slow and blur your teams vision.