Fun concept, kinda like real-time Super Auto Pets. I really like the diverse and striking character designs, very creative and really out-there.
Misc Notes:
That font choice is a bit rough. It might fit the aesthetic you are going for, but people already don't want to read a bunch of text when gaming, you should consider choosing a font that's kinder on the eyes!
I both like and dislike being able to see the enemy lineup. In one hand you kind of need the information to construct your lineup. On the other hand it means a lot of keeping track of information and swapping back and forth (which at least can be done easily with the SHIFT key).
There might be some UI ways of handling this, or maybe a "simulate battle" button that basically lets you test out your lineup before submitting it, or like a "see the future" button which shows what your lineup would look like after the fight without showing the details of the fight.
This sort of trivializes the game (just throw in random units, test it, then re-arrange test it, re-arrange, test it etc...), but maybe that's a good thing? Since you have limited use of your units, the real decisions the player makes is what units they are willing to lose and take damage on each round instead of just trying to win and lose.
The music could use a bit of work. The melody isn't bad (although it's not very background music-like. It's a bit more in-your-face punchy in execution than I would expect for a strategy game), but the repetition of the base chords gets a bit grating. Maybe dressing the base chords up with some arpeggios or grace notes could help. The issue might also just be that the progression is always two chords, when usually we want at least a three chord progression like I -> IV -> V -> I to feel some movement and resolution. Just some thoughts.
The art style is very unique. It lacks cohesion, but I could see that being a cool thing if you lean into it enough. A lot of the art borrows visual tools from DBZ which is neat, but is a bit distracting since it's not shared across all the assets (so it sticks out as inconsistent instead of a conscious choice).