This weapon is on the Spazer, the two saucers on the wings will have spinning blades that come out onto the sides.  The Spin Saucers are fired at the enemy and are mostly used against Minifo.  They are used against Vegan beasts mainly to stun them.

This weapon comes out of the red saucers on the wings of the Spazer.  The saucers open up and reveal a small gun on each saucer, these guns fire out spinning drills.  These are small weapons which again are used against Minifo, and also to stun Vegan saucer beasts.

The red saucers are fired and as they come close to the enemy, their cannons fire out the Spin Drill.

This is a fluid that is fired from the Spazer; fired from the two cannons on both sides around the cockpit area.  This fluid actually melts metals.  It seems like it is acidic or very hot when fired.  This is mostly used against Minifo, and sometimes will be used against Vegan saucer beasts.

This weapon is fired from the back of Spazer.  It is used to jam the enemy radars in case Grendizer needs to withdraw.

This weapon was only used once.  A magnetic wave comes from Grendizer to stun an enemy if it grabs a hold of it.

Similar idea as Great Mazinger's Thunder Break (but more powerful of course), this weapon comes out of Grendizer's horns.  Grendizer uses this weapon to finish off the enemies very often.

This weapon was only used twice in the series, one of the less effective weapons.  It comes out of Grendizer's eyes.

This weapon comes out of Grendizer's chest.  Following the tradition of Mazinger Z's Breast of Fire, and Great Mazinger's Breast Burn, Grendizer has this beam.  The purpose of this beam is to push away enemies or stun them.

These blades are on Grendizer's shoulders.  They are fired as their name depicts, boomerangs.  They will slice many enemies to pieces or take off their shields.

This is an awesome one-of-a-kind weapon.  The two blades on Grendizer's shoulders will come off followed by two rods, they are connected together for a very powerful weapon.  The Double Harken will be thrown by Grendizer to destroy many enemies.  Many times, Grendizer will take off the Vegan beasts heads with it.

This is half of the Double Harken.  As you also see at the very top of this page, Grendizer can use each Single Harken as a separate weapon.

Grendizer has three cannons on each hand, from these cannons comes out the Hand Beam.  This beam is not as powerful as the Space Thunder, but it is a handy weapon that Grendizer will use a great deal.

Believe it or not, Grendizer also fires missiles from his hands.  I thought they only did that in the comics.  This weapon was used twice in the Grendizer series.

The tradition continues with super robots firing their forearms as weapons.  Mazinger Z has the Iron Cutter, Great Mazinger has the Drill Pressure Punch, and Grendizer has the most powerful one, the Screw Crusher Punch.  As Grendizer's forearms fire, the red blades will switch to forward position and spin.  This weapon is very effective and has done some great damage to enemies.

Similar to the Screw Crusher Punch, but this one has the red blades switching to a fan position and spinning.  This weapon is good when Grendizer wants to hit a wider area with his fist.

This one has the red blades switch to forward position and close, then Grendizer will fire the forearms without them spinning.

Grendizer fires his spinning forearms as a regular punch.

Grendizer will use his forearms to break through rocks and dig underground.  This was not needed anymore after the Drill Spazer was built.  Grendizer actually punched a Vegan beast with the Screw Crusher in episode #46.