Avatar; The Royal Firebender.

The Dragon of The North

With how desperately outnumbered the watertribe is, Zhao practically walked uncontested up to the spirit oasis to claim his goal. The steel war machine of the firenation is unstoppable, the forefront of the invasion force is being led by steel monstrosities. Large solid steel tanks with spiked wheels crawl along the ice and snow providing an escort to the legions of soldiers behind them. The majority of the northern watertribe's warriors aren't benders and they're completely defenseless against the tundra tanks. Those that are benders have put up more of a resistance, but with the firebending strengthened by the sun their resistance is doing little more than blowing steam in their faces. Losing more and more ground to the firenation, Pakku calls a full retreat to the second district of Anga Qel'a. Ascending the grand staircase to the second district of the city, Pakku instructs his waterbenders to form as tall and as thick of a wall of ice as possible in order to buy just a little more time. The sun is sitting just above the ocean and with it the full moon is beginning to rise, they just need a few more minutes and the tide will turn in this battle.

Hundreds of warriors capable of waterbending melt away the surrounding ice, buildings and snow gathering as much water as possible. On the staircase itself, Pakku and a couple other masters draw their hands upwards above their heads before pushing them down the same angle as the staircase causing the stairs to melt. The melting ice creates a large wave of water washing the assaulting tanks and men from the grand staircase leaving it a steep, unclimbable angle, at least for general infantry. Pakku and the other masters use their bending to ascend the slick slope of the former staircase, launching themselves to the top of the wall with a small waterspout. "Bring the cauldrons, we need to repair the wall as they attack it, and we need something other than our wall to bend at them!" Pakku orders, prompting some of the other warriors to rush up to the first district to retrieve the large ice cauldrons of water.

Below them, the tundra tanks scrape against the ice finally coming to a stop at the base of the grand staircase. The men they were escorting were washed down with them, leaving them dazed, confused and practically hypothermic. While the firenation forces quickly burn away the cold water soaking into their clothes and armor, the tundra tanks right themselves. The ones that landed upside down do something rather peculiar, the center cabin of the tank rotates 180 degrees until they're right side up. Several of them have ended up on their sides but their crews manage to push the metal behemoth over so that it is drivable once again. Once back in the upright position, the tanks begin attempting to scale the icy slope. From the front of the tanks, twin cannon barrels fire a set of chain harpoons into the side of the ice wall erected by the waterbenders. "Sever the chains, we need to hold this ground till sunset! Just a few more minutes!" Pakku calls out, drawing up several gallons of water from one of the cauldrons in a single hand movement, he slashes his hand downwards at the steel chains cutting through the connection point between it and the anchor causing the entire line to fall.

As the tundra tanks begin their slow crawl along the ice up to the wall, the foot soldiers behind them fall into single file lines to walk up the divots created by the spiked wheels. Slowly but surely the tanks make progress up the icy slopes, getting close enough for the gunner's turret on top to open up. Large fireballs come screaming out of the turret openings slamming into the wall with enough force to crack and chip large portions of it. Several of the men atop the wall focus on bending the fractured ice back into its proper shape while the others return fire back at the tanks. The cauldrons of water serve as the ammunition for the waterbenders, drawing up large streams before the water is frozen and launched in the form of deadly icicles back towards the tanks below. Dozens of large ice spikes rain down on the tundra tanks, shattering like glass against their steel hulls. Some of the spikes are lucky enough to be shot straight through the turret opening impaling the firebenders inside. The infantry behind the tanks are forced to take cover from the rain of icicles, losing their own progress up the slopes.