Question

Stupid ability, making this Legendary bad. Mine knows:

Substitute: It has high enough HP and good enough defenses to be used as a Staller. This is needed.

Toxic: Needed for stalling. Inflicts toxic poison.

Confuse Ray: Helps with stalling by confusing the foe.

Drain Punch: Helps increase HP lost by Substitute since I don't think it can learn Rest.

Regigigas learnset

Answer 1

I would use worry seed on him if you're in a 2 on 2 battle. Gets rid of his ability, he can't use rest anyway.
for the offensive

Zen headbutt- covers weakness

Earthquake-Given

Drain punch-his high attack makes up for the base power.

Facade- works well if he gets a status move, STAB.

for your defensive one, maybe throw in block.

Giga impact or focus punch can work well with susbstitute and confuse ray as well.

Answer 2

How about Rock Slide to deal with Flying and Fire types.

Return STAB with it's huge attack and people usually treat legendaires with kindness.

Aerial Ace to deal with Grass, bug, and its weakness.

And Earthquake to deal with electricity.

Then you will be powerful:)

Answer 3

Double/Triple Battle Sun Sweeper

Regigigas @ Leftovers
Trait: Slow Start
EVs: 200 HP / 252 Atk / 56 Spd
Adamant Nature (+Atk, -SAtk)
- Fire Punch
- Earthquake
- Rock Slide
- Frustration/Retaliate

Team up with Leavanny. Use Entrainment. Regigagas now has Chlorophyll. You can then set up Sunny Day with Leavanny or have had a previous Pokemon such as the great Whimsicott do it before. Regi is incredibly powerful, incredibly bulky, and now is Ninjask level fast. It can also hit multiple foes with Rock Slide and Earthquake. Fire Punch is coverage that gets boosted by Sun. Frustration is STAB, although Retaliate can be used since Leavanny won't last long.

Answer 4

Thunder Wave - yeah!
Confuse Ray - yeah!
Focus Punch - yeah!
Zen Headbutt - coverage

Answer 5

Gen V

Regigigas @ Leftovers
Trait: Slow Start
EVs: 172 HP / 168 Def / 168 SDef
Impish Nature (+Def, -SAtk)
- Toxic
- Substitute
- Confuse Ray
- Crush Grip

Comments

I think crush grip and toxic are mutually exclusive to work well :/

Answer 6

Generation V (White & Black) Regigigas
Ability: Slow start (unfortunately)
Item: Silk scarf (to increase the power of dizzy punch) or zap plate (if you learn him thunder)
Moves (that make him win every battle) :

1. Dizzy Punch or thunder
2. Fire Punch
3. Ice Punch
4. Thunderpunch

I learn him that moves, and i win every battles except one when i forget to learn him fire punch(i lose because i have battled a grass typep okemon)

P.S.: LEARN HIM THAT MOVES BECAUSE THIS ARE 4 DIFERENT TYPES OF MOVES!!! (And this is a good startegy to win every battle, just have 4 types of moves)

HOPE IT HELP:D !!!

Comments

Just because he has good coverage does not mean he will win every battle. Also please improve your grammar it is very hard to read, you do not learn that moves you teach him those moves.

Answer 7

Regigigas@ Leftovers

Trait: Slow Start

-Zen Headbutt -- covers weakness
-Return -- STAB, deals massive damage
-Earthquake -- very strong move
-Confuse Ray / Drain Punch -- If you still have TM Drain Punch, than its better to teach him that, If you dont, than Confuse Ray is a good choise.