Well, when JirachiCelebiMew (JCM) made a PU team, it looked fun, so I decided to try one, too! But keep in mind that I have never heard of PU before, so this team will suck. Here goes nothing!
Victreebel @ Black Sludge

Trait: Chlorophyll
EVs: 252 Attack / 252 Speed / 4 HP
Modest Nature (+SpA, -Atk)
Sunny Day
Solar Beam
Sludge Bomb
Giga Drain
Wailord @ Choice Scarf
Trait: Water Veil
EVs: 252 Defense / 252 HP / 4 SpD
Bold Nature (+Def, -SpA)

Water Spout
Hydro Pump
Hidden Power [Grass]
Ice Beam
Gigalith @ Choice Band
Trait: Sturdy
EVs: 252 Attack / 248 Speed / 8 HP
Adamant Nature (+Atk, -SpA)
Earthquake
Rock Slide
Stone Edge
Explosion
Purugly @ Life Orb


Trait: Thick Fat
EVs: 244 Speed / 152 HP / 114 Attack
Adamant Nature (+Atk, -SpA)
Return
Aerial Ace
U-Turn
Taunt
Rampardos @ Choice Scarf

Trait: Mold Breaker
EVs: 252 Attack / 252 HP / 4 Defense
Adamant Nature (+Atk, -SpA)
Head Smash
Earthquake
Super Power
Fire Punch
Electrode @ Leftovers
Trait: Soundproof
EVs: 152 Speed / 252 Special Attack / 106 HP
Timid Nature (+Spe, -SpA)
Thunderbolt
Taunt
Hidden Power [Grass]
Charge Beam
Importable Copy
Victreebel @ Black Sludge
Trait: Chlorophyll
EVs: 252 Attack / 252 Speed / 4 HP
Modest Nature (+SpA, -Atk)
Sunny Day
Solar Beam
Sludge Bomb
Giga Drain
Wailord @ Choice Scarf
Trait: Water Veil
EVs: 252 Defense / 252 HP / 4 SpD
Bold Nature (+Def, -SpA)
Water Spout
Hydro Pump
Hidden Power [Grass]
Ice Beam
Gigalith @ Choice Band
Trait: Sturdy
EVs: 252 Attack / 248 Speed / 8 HP
Adamant Nature (+Atk, -SpA)
Earthquake
Rock Slide
Stone Edge
Explosion
Purugly @ Life Orb
Trait: Thick Fat
EVs: 244 Speed / 152 HP / 114 Attack
Adamant Nature (+Atk, -SpA)
Return
Aerial Ace
U-Turn
Taunt
Rampardos @ Choice Scarf
Trait: Mold Breaker
EVs: 252 Attack / 252 HP / 4 Defense
Adamant Nature (+Atk, -SpA)
Head Smash
Earthquake
Super Power
Fire Punch
Electrode @ Leftovers
Trait: Soundproof
EVs: 152 Speed / 252 Special Attack / 106 HP
Timid Nature (+Spe, -SpA)
Thunderbolt
Taunt
Hidden Power [Grass]
Charge Beam