So this is my first time doing a RMT OU team thread and need help with improving my team as well as advice so here I go however I am keeping my Breloom.
Lead: Jolteon (M) @ Focus Sash
Trait: Volt Absorb
EV's 4 HP/ 252 SAtk/ 252 Spd
Jolly Nature (+Spd, -Atk)
-Thunderbolt
-Yawn
-Thunder Wave
-Signal Beam
Lead Jolt, used to paralyze opponents and cause opponent to switch pokes with yawn or put them to sleep and hit folks later on with it's good speed stat. Depending on the opponent's team, I may save it for later use for clean up with STAB Thunderbolts if
the opponent's team is very vulnerable to it or can't outspeed it.
Vaporeon (F) @ Leftovers
Trait: Water Absorb
EV's 4 Def/ 252 HP/ 252 Satk
Bold Nature (+Def, -Atk)
-Wish
-Protect
-Ice Beam
-Scald
My darling wish passer and main wall. She's self explanatory as well as burning folks with Scald and hitting dragon's and Gliscors with Ice Beam as well. Also help's with stalling against certain pokes as well.
Rudra (Skarmory) (M) @ Leftovers
Trait: Sturdy
EV's 252 HP/ 232 Def/ 24 Spd
Impish Nature (+Def, -SAtk)
-Brave Bird
-Roost
-Whirlwind
-Spikes
Rudra is my spikes user and secondary wall against some dragons that don't carry fire moves and other pokes that can't get through it as well as getting rid of opponents pokes who are trying to set up.
Agni (Heatran) (M) @ Air Balloon
Trait: Flash Fire
Ev's 4 SDef/ 252 Satk/ 252 Spd
Modest Nature (+SAtk, -Atk)
-Fire Blast
-Earth Power
-Hidden Power[Grass]
-Stealth Rock
Agni is my Special Sweeper and my user to set up rocks. He's self-explanatory set up and hit stuff. He's helps against sun teams with check-in's to certain pokes with it's flash fire ability.
Salamence (M) @ Life Orb
Trait: Intimidate
Ev's 4 Satk/ 252 Atk/ 252 Spd
Naive Nature (+Spd, SDef)
-Fire Blast
-Outrage
-Earthquake
-Dragon Dance
Salamence is my mixed sweeper and to help against other dragons and other physical sweepers. It can easily tear up about 1-2 pokes by itself minimum with a dance under it's belt and do even more damage when the opponents team is paralyzed,burned and asleep with entry hazards up.
Breloom (M) @ Toxic Orb
Trait: Poison Heal
EV's 48 HP/ 252 Atk/ 208 Spd
Adamant Nature (+Atk, -SAtk)
-Seed Bomb
-Spore
-Substitute
-Focus Punch
THE clean up crew of the team and easily the salt bringer when played right, I reversed sweep and won a few games with my Breloom with assistance. A standard Sub Puncher who puts the opponent to sleep as well while activating it's orb and taking out the trash.
CONCLUSION: The most trouble I come across is not taking out certain pokes If I don't take out quick enough like Blissey's, Gliscor's and other Skarmory's. I have a little trouble as well with weather teams but I can win as long as I predict correctly and take out the opponents biggest threats quick or cripple the opponents team as fast as possible as long as it doesn't happen to me right away.

Lead: Jolteon (M) @ Focus Sash
Trait: Volt Absorb
EV's 4 HP/ 252 SAtk/ 252 Spd
Jolly Nature (+Spd, -Atk)
-Thunderbolt
-Yawn
-Thunder Wave
-Signal Beam
Lead Jolt, used to paralyze opponents and cause opponent to switch pokes with yawn or put them to sleep and hit folks later on with it's good speed stat. Depending on the opponent's team, I may save it for later use for clean up with STAB Thunderbolts if
the opponent's team is very vulnerable to it or can't outspeed it.

Vaporeon (F) @ Leftovers
Trait: Water Absorb
EV's 4 Def/ 252 HP/ 252 Satk
Bold Nature (+Def, -Atk)
-Wish
-Protect
-Ice Beam
-Scald
My darling wish passer and main wall. She's self explanatory as well as burning folks with Scald and hitting dragon's and Gliscors with Ice Beam as well. Also help's with stalling against certain pokes as well.

Rudra (Skarmory) (M) @ Leftovers
Trait: Sturdy
EV's 252 HP/ 232 Def/ 24 Spd
Impish Nature (+Def, -SAtk)
-Brave Bird
-Roost
-Whirlwind
-Spikes
Rudra is my spikes user and secondary wall against some dragons that don't carry fire moves and other pokes that can't get through it as well as getting rid of opponents pokes who are trying to set up.

Agni (Heatran) (M) @ Air Balloon
Trait: Flash Fire
Ev's 4 SDef/ 252 Satk/ 252 Spd
Modest Nature (+SAtk, -Atk)
-Fire Blast
-Earth Power
-Hidden Power[Grass]
-Stealth Rock
Agni is my Special Sweeper and my user to set up rocks. He's self-explanatory set up and hit stuff. He's helps against sun teams with check-in's to certain pokes with it's flash fire ability.

Salamence (M) @ Life Orb
Trait: Intimidate
Ev's 4 Satk/ 252 Atk/ 252 Spd
Naive Nature (+Spd, SDef)
-Fire Blast
-Outrage
-Earthquake
-Dragon Dance
Salamence is my mixed sweeper and to help against other dragons and other physical sweepers. It can easily tear up about 1-2 pokes by itself minimum with a dance under it's belt and do even more damage when the opponents team is paralyzed,burned and asleep with entry hazards up.

Breloom (M) @ Toxic Orb
Trait: Poison Heal
EV's 48 HP/ 252 Atk/ 208 Spd
Adamant Nature (+Atk, -SAtk)
-Seed Bomb
-Spore
-Substitute
-Focus Punch
THE clean up crew of the team and easily the salt bringer when played right, I reversed sweep and won a few games with my Breloom with assistance. A standard Sub Puncher who puts the opponent to sleep as well while activating it's orb and taking out the trash.
CONCLUSION: The most trouble I come across is not taking out certain pokes If I don't take out quick enough like Blissey's, Gliscor's and other Skarmory's. I have a little trouble as well with weather teams but I can win as long as I predict correctly and take out the opponents biggest threats quick or cripple the opponents team as fast as possible as long as it doesn't happen to me right away.