Delta Slaking looks nice, it feels like a stronger Electivire now! Alright, here's my second contribution: (DISCLAIMER: I'm going to break the rules slightly here by making a new ability. But trust me, this does more harm to the Pokemon than good.)
Delta Regigigas: Rock/Ice
Description: Regigigas fuses with the Regi trio. Its yellow rings turn into gray steel rings, and its grip claws become plated with steel. The black stripes become ice stripes. The "grass" on its body become brown chunks of rocks.
Reason For Creation: Regigigas has always been screwed over by its awful ability, Slow Start. Today, I would like to change that. With a Triple-typing of Rock/Ice/Steel, it may look incredible on the first glance. However, this typing holds a fatal weakness that makes it prone to two of the most common attacking types - 8x weakness to Fighting and 4x weakness to Ground (Not to mention it also has 2x weakness to Fire and Water!). To play well with Delta Regigigas, you must remove the opponent's Mach Punch or Vacuum Wave user first, and then setup on a Pokemon that can't touch Regigigas. Delta Regigigas may not be able to enter OU or UU by usage, but it's still a force to be reckoned with.
Ability: Metal Guard (Applies Steel typing to the user)
Level-up Movepool:
Lv. 1: Heavy Slam, Crush Grip, Ancient Power, Ice Punch, Rock Polish, Knock Off, Confuse Ray Lv. 20: Iron Defense
Lv. 25: Ice Shard Lv. 30: Curse Lv. 35: Bullet Punch
Lv. 40: Wide Guard Lv. 45: Hammer Arm
Lv. 50: Icicle Crash Lv. 60: Iron Head
Lv. 65: Rock Slide
Lv. 75: Crush Grip
Lv. 80: Stone Edge
Lv. 85: Earthquake
Lv. 90: Autotomize
Lv. 95: Meteor Mash
Lv. 100: Giga Impact
TM Compatibility:
Toxic, Hail, Hidden Power, Sunny Day, Ice Beam, Blizzard Hyper Beam, Rain Dance, Safeguard, Frustration, Smack Down, Thunderbolt, Thunder, Earthquake, Return, Brick Break, Double Team, Rock Tomb, Facade, Rest, Round, Focus Blast, Fling, Charge Beam, Payback, Retaliate, Giga Impact, Rock Polish, Stone Edge, Thunder Wave, Psych Up, Bulldoze, Frost Breath, Rock Slide, Swagger, Sleep Talk, Substitute, Flash Cannon Rock Smash, Secret Power, Nature Power, Power-Up Punch, Confide, Strength
Tutor Moves:
Block, Drain Punch, Earth Power, Focus Punch, Gravity, Ice Punch, Icy Wind, Iron Head, Knock Off, Shock Wave, Snore, Superpower, Thunder Punch, Signal Beam, Magnet Rise, Stealth Rock.
Bred Moves: None.
Egg Group: Undiscovered.