Alphys

Alphys was the Royal Scientist of the underground, and the designer of Mettaton. During the detirmination Experiments, she discovered the signifigant potential in human blood, ad with the go-ahead from Asgore, began the blood Experiments. As we know, things went horribly wrong, resulting in the beastly outbreak that ravenged the Underground. In the chaos, Alphys retreated into hiding, in an attempt to both escape the spread of the plauge, and to try and find a cure for it. Unfortunately for Alphys, she became infected in her struggle to escape, and although she had managed to slow down the speed of the infection, it was evident that she could not stop it from taking control of her. The question was...when?

In her time in hiding, Alphys began development of a supercomputor called COM.A, which would be able to continue her work when things would go wrong. COM.A was given access to an enormous variety of tools and materials that Alphys used during her Royal Scientist days, allowing for remote operation of machines and tools. COM.A was to be powered by a monster soul, and so, with very little time left, Alphys attempted to extract her own soul to be used, however, things went wrong, and was only able to extract about half of her soul. miraculously, COM.A was able to power on, and function as expected, contain Alphys' memories and plans, as well as a large chunk of her personality. It was just after this, that Alphys herself, Transformed into a beast.

Alphys escaped from her base she had made, and now lurks around the lower regions of Hotland, mostly around the lab regions. It is unknown why she came here in her beastly state, but perhaps she remembers this place from her fragmented memories of being a Scientist. many of the puzzles and traps throughout hotland have fallen into disrepair, so Alphys has little trouble getting around, and stalking prey. Due to the splitting of her soul, Alphys has very little HP, however, she makes up for this with her wide arsenal of claws and teeth she posesses, as well as the ability to sneak up on targets, utilizing the canyon-like aspect of Hotland to her advantage.

Appearance
After her transformation due to the blood, Alphys has become adapted as an apex predator in her domain of hotlands. She is a large, dinosaur-like beast, resembling a Carnotaurus, or Tarrasque.