King Piccolo Saga
Strength/Durability
Yajirobe throws a rock:
http://i.imgur.com/HCC1e44.jpg
http://i.imgur.com/Vg1R3fz.jpg
Yajirobe gets smashed into a big rock. He dust himself off, unharmed:
http://i.imgur.com/lRRKfdK.jpg
Bora throws Yajirobe and Goku really high up. Really, really high up. They even go past the clouds:
http://i.imgur.com/dmZT4po.jpg
http://i.imgur.com/ouyiQ35.jpg
Goku tosses King Piccolo into a building and breaks the building:
http://i.imgur.com/5ALGctj.jpg
Energy Blasts
Cymbal's Energy Bolt
A ki attack similar to a bolt of lightning:
http://i.imgur.com/cwTZJZb.jpg
It can also be spammed:
http://i.imgur.com/kHQB8ln.jpg
Mouth Blast: An energy blast fired from the mouth.
First used by Tamborine to destroy Goku's Nimbus. Unlike an earlier rocket launcher attack, this one is able to kill the flying cloud:
http://i.imgur.com/6qxL3qc.jpg
King Piccolo later uses it to kill Shenron:
http://i.imgur.com/olXm7SQ.jpg
Eye Beams: A technique that allows one to shoot ki beams from their eyes:
http://i.imgur.com/jifIeSd.jpg
Kamehameha: Goku shows the ability to control the trajectory of the blast for the first time by curving it against King Piccolo:
http://i.imgur.com/GHy6Vd1.jpg
http://i.imgur.com/AhtDH5R.jpg
http://i.imgur.com/wmeheVE.jpg
Explosive Demon Wave
A ki attack used by King Piccolo. Ki shoots out from the open palm and strikes a target:
http://i.imgur.com/GlKGARo.jpg
As he puts more power into the technique, he holds his wrist when he uses it. Possible to help his aim. With it, he turns the area him and Goku were fighting in, city included, into a wasteland:
http://i.imgur.com/FMpRQEj.jpg
http://i.imgur.com/x57jElf.jpg
http://i.imgur.com/F7A4yzr.jpg
Mafuba: A sealing technique that traps the target in a container. Roshi tries and fails to use it against King Piccolo:
http://i.imgur.com/Mg47qaV.jpg
http://i.imgur.com/Bx9Omtl.jpg
http://i.imgur.com/TVyuKAl.jpg
Exploding Wave: King Piccolo waves his arm and release a large blast of Ki. He uses it to destroy a huge chunk of a city:
http://i.imgur.com/EuFnsI4.jpg
http://i.imgur.com/XZcjj2x.jpg
http://i.imgur.com/cuqqL7g.jpg
One Handed Ki Blast: An attack used by Goku after King Piccolo has rendered his arm unusable. While he doesn't call the name, it may be a one handed Kamehameha:
http://i.imgur.com/eWeguYv.jpg
http://i.imgur.com/pVMX7UB.jpg
Finger Beams: Thin beams of Ki shot through the fingers:
http://i.imgur.com/qfhgmiK.jpg
Other
Long Range Telepathy: While previous uses of telepathy have happened between people within talking distance of each other, King Piccolo shows the ability to do it over long distances:
http://i.imgur.com/8QsAbxr.jpg
Knock Out Gas: Roshi has some:
http://i.imgur.com/WViddxU.jpg
Telekinesis: King Piccolo uses it to dig up the Dragon Balls:
http://i.imgur.com/fwlVAaI.jpg
http://i.imgur.com/vnLFo7W.jpg
Underling Creation: King Piccolo can create powerful creatures by spitting eggs from his mouth:
http://i.imgur.com/qTdoza4.jpg
http://i.imgur.com/PXpeHnT.jpg
Ultra Divine Water: A special water that can awaken one's hidden potential. It can also kill you, 'cause it's also a really strong poison. Goku struggles with its effects for 6 hours before succeeding:
http://i.imgur.com/8SDwTwd.jpg
http://i.imgur.com/LtlAm5a.jpg
http://i.imgur.com/OYJmp06.jpg
Giant Nimbus: Karin has a gigantic Flying Nimbus from which he gives Goku a new one:
http://i.imgur.com/oYBuhlL.jpg