Undyne vs Kumuzilla

"Catch."

- Undyne the True Hero

Context
After getting dropped off by Rave to a location for Undyne to defeat the Kumuzilla, a battle occurs as Undyne attempts to kill the ravaged beast.

Battle
Once Rave drops off Ronan and Undyne at their designated spot, he heads off to the park with his team to power the Avalon together. When they arrive, they activate it all together, luring the creature for its large quantity of magic. It required all of their power to create a strong dome-shaped shield to keep hold of the giant monster. After enclosing it, Ronan distracts and destroys the remaining blobs with his magic, while Undyne heads to the top of a nearby building. Once she arrives, she directs Rave to make an opening for Undyne's spear to go through. She then creates a powerful spear that would destroy the creature. Then, with the opening in the shield, Undyne casts her spear into the enclosing, with smoke rising out of it, leading Undyne to believe that it was killed. As a result, she is caught off-guard, allowing for the Kumuzilla to strike the building underneath her, sending her crashing into another building. When she is seen again, she is covered in agonizing wounds and struggles to get up.

Once she realizes that everyone is counting on her, she becomes Undyne the True Hero and gains a new outfit. Once she notices that Ronan is having trouble, she then creates a yellow spear and throws it at the blobs outside of the shield, rebounding off of all the pink creatures and destroying them all in one go. Furthermore, because Rave's battalion is low on soul energy, the Avalon is losing power. Kumuzilla is now able to create a hole in the shield, allowing some pink blobs to escape. Rave grabs a magic ray gun and destroys the spare pink creatures. He then manually powers the Avalon and is told by Ronan that Undyne will try again. She then transports Ronan to the top of another building. Once up there, Undyne tells Ronan "Catch". He is unaware of what she meant, until she launched herself up in the air, and created a huge and powerful spear, which has the ability to crack buildings when set aflame. Both Rave and Ronan are in shock, and moments before she launches it, she starts to lose her "True Hero" form. She then launches it into the Avalon, completely destroying both Kumuzilla and the shield, resulting in Rave to pass out. When Ronan glances and remembers what Undyne told him. Undyne utters the words, "I did it Alphys..." before falling to the ground. Ronan reacts and catches her on time, hanging off the side of the building. He then drags her back to the rooftop, and thanks her.