Kangaskhan is not very well known as a threat or anything like that, but she surely has some option behind that belly that can make her excel.
http://www.serebii.net/pokedex-dp/115.shtml
Physical Side ~
Fake Out -
With It's high Base Attack, STAB and Choice Band, Kangaskhan can make a very good use of this, especially with no immunities thanks to Scrappy.
Crunch -
Crunch can hit Ghosts and Psychic for super effective damage and the chance of lowering Defense is always nice.
Outrage -
Superb in a Choice Band Set, as you will be coming and going with It.
Sucker Punch -
When you can't count on speed very much, Sucker Punch is a better choice than Crunch. Heck, It is almost always a better choice than Crunch.
Reversal -
Paired with Substitute and a Salac Berry, Reversal can be a very deadly move for It, as nothing is immune to It, thanks to Scrappy, It's Trait.
Focus Punch -
Good for predicted switches and such.
Return / Frustration -
Kanga's best STAB, overall.
Earthquake -
We all know this one. Powerful and Hits a lot of stuff super effective.
Brick Break -
If you don't have Focus Punch's skill or Reversal's Set up, Brick Break is always an option.
Aerial Ace -
One word. Heracross.
Shadow Claw -
Crunch with a different effect and better typing, but with lower BP
Avalanche -
Hardly a good option, but If you activate It, It hurts. A lot. Also, it can be used very well with Arm Hammer.
Rock Slide -
Weak, but It's attacking type is always good. Flinch Hax is good for a CSc Set.
Arm Hammer -
Good as a better substitute to Focus Punch and Reversal than Brick Break, not to mention It works well with Avalanche.
Special Side ~
Do you care? 40 Base Special Attack don't help at all. Well, if you are interested, it's massive, Surf, Ice Beam, Focus Blast, Fire Blast, Shadow Ball, Thunderbolt and so on...
Support Side ~
Roar -
Good for some Phazing. It's always there.
Substitute -
Awesome with that base HP. 101 Subs for the win.
Toxic, Swagger.. -
Kanga has better things to do.
Move Sets;
Kangaskhan @ Choice Band
Relaxed; 152 Defense, 252 Special Defense, 104 HP
-Avalanche
-Sucker Punch / Crunch
-Fake Out / Return / Frustration
-Arm Hammer
377 HP, 259 Defense and Special Defense. The rest is standard. A Tankish Sweeper.
Kangaskhan @ Leftovers
Impish; 212 HP, 92 Defense, 192 Special Defense.
-Substitute
-Focus Punch
-Shadow Claw
-Return
101 Substitutes. 244 Defense and Special Defense. Ghost + Fight = No resistance. Doesn't pack that much of punch, but you can take some EVs from Defense and Special Defense for Attack.
Kangaskan @ Choice Scarf
Adamant; 252 Attack, 220 Speed, 36 HP
-Brick Break / Focus Punch
-Shadow Claw / Crunch
-Return
-Rock Slide / Outrage
CSc Sweeper.
Kangaskhan @ Salac Berry
Adamant; 108 Speed, 212 HP, 188 Attack
-Reversal
-Substitute
-Return
-Sucker Punch / Random Filler
Subs + Salac + Reversal. You may want 216 for 4 Subs and higher Reversal Base Power.
Discuss. My apologies If this has already been done.
http://www.serebii.net/pokedex-dp/115.shtml
Physical Side ~
Fake Out -
With It's high Base Attack, STAB and Choice Band, Kangaskhan can make a very good use of this, especially with no immunities thanks to Scrappy.
Crunch -
Crunch can hit Ghosts and Psychic for super effective damage and the chance of lowering Defense is always nice.
Outrage -
Superb in a Choice Band Set, as you will be coming and going with It.
Sucker Punch -
When you can't count on speed very much, Sucker Punch is a better choice than Crunch. Heck, It is almost always a better choice than Crunch.
Reversal -
Paired with Substitute and a Salac Berry, Reversal can be a very deadly move for It, as nothing is immune to It, thanks to Scrappy, It's Trait.
Focus Punch -
Good for predicted switches and such.
Return / Frustration -
Kanga's best STAB, overall.
Earthquake -
We all know this one. Powerful and Hits a lot of stuff super effective.
Brick Break -
If you don't have Focus Punch's skill or Reversal's Set up, Brick Break is always an option.
Aerial Ace -
One word. Heracross.
Shadow Claw -
Crunch with a different effect and better typing, but with lower BP
Avalanche -
Hardly a good option, but If you activate It, It hurts. A lot. Also, it can be used very well with Arm Hammer.
Rock Slide -
Weak, but It's attacking type is always good. Flinch Hax is good for a CSc Set.
Arm Hammer -
Good as a better substitute to Focus Punch and Reversal than Brick Break, not to mention It works well with Avalanche.
Special Side ~
Do you care? 40 Base Special Attack don't help at all. Well, if you are interested, it's massive, Surf, Ice Beam, Focus Blast, Fire Blast, Shadow Ball, Thunderbolt and so on...
Support Side ~
Roar -
Good for some Phazing. It's always there.
Substitute -
Awesome with that base HP. 101 Subs for the win.
Toxic, Swagger.. -
Kanga has better things to do.
Move Sets;
Kangaskhan @ Choice Band
Relaxed; 152 Defense, 252 Special Defense, 104 HP
-Avalanche
-Sucker Punch / Crunch
-Fake Out / Return / Frustration
-Arm Hammer
377 HP, 259 Defense and Special Defense. The rest is standard. A Tankish Sweeper.
Kangaskhan @ Leftovers
Impish; 212 HP, 92 Defense, 192 Special Defense.
-Substitute
-Focus Punch
-Shadow Claw
-Return
101 Substitutes. 244 Defense and Special Defense. Ghost + Fight = No resistance. Doesn't pack that much of punch, but you can take some EVs from Defense and Special Defense for Attack.
Kangaskan @ Choice Scarf
Adamant; 252 Attack, 220 Speed, 36 HP
-Brick Break / Focus Punch
-Shadow Claw / Crunch
-Return
-Rock Slide / Outrage
CSc Sweeper.
Kangaskhan @ Salac Berry
Adamant; 108 Speed, 212 HP, 188 Attack
-Reversal
-Substitute
-Return
-Sucker Punch / Random Filler
Subs + Salac + Reversal. You may want 216 for 4 Subs and higher Reversal Base Power.
Discuss. My apologies If this has already been done.