You might have realised that pretty much 99% of the community prefers using a controller instead of a keyboard which is nothing new for fighting games.

But I do believe this game is actually extremely keyboard friendly!

First of all this game uses Digital input meaning you won't be losing any possible angles by going with keyboard.

Also most hand movements this game makes you do feels rather natural on keyboard but this one obviously depends on your binds.

So due to these I say for Nickelodeon All-Star Brawl, choice between Keyboard and Controller really is a matter of personal preference.

In the options section as you can see there are no options for changing keybinds
You have to go to the character select screen and press C to rebind your keys

In that screen you can rebind anything you want! ... Except movement keys. For some reason movement keys are locked to arrows
Also menu navigation is always on Z, X, C but I assume that shouldn't be a problem for many people

When you open the rebind section you can scroll down(↓) and see all the actions with a bind next to them
Thoose are the default binds

When you hover over them you can press any button on your keyboard(except arrow keys ofc) and it will bind that action to that button! Pretty neat right?

But wait! There is more!

I am not sure if this is a bug or not but the game seem to remember everything you bound to an action even after you change it, and keeps it until you bind another action to that specific button.

Meaning even tho keybinds section is only capable of showing 1 bind per action, you can actually bind as many buttons to an action as you want!
You want entirety of your numpad to make you jump ?
You can do that! ... Why would you do that ?
No idea. But you can!

I really hope even if this is a bug they won't ever "fix" it and if possible go the opposite way and let us see all the buttons we have bound to every action without going into game files and opening the controls.json file with a text editor(Strafe action is called "Fun" in the json file for some reason lol)

Also after you bind them if you ever open rebind section again and go over the binds by pressing ↓ without changing them you might see them change back to their default state.
Don't worry this seem to be only a visual bug. There is nothing to worry about.
You can just press confirm to close it, even tho the buttons that are being shown in binds are not yours when you get in game you will still have your layout.

Attack=A
Strong=S
Special=D
Jump=Space
Airdash/Defend=Q, W, E, Left Shift, Right Shift
Grab=F, num0
Strafe=Left Ctrl, Right Ctrl
Taunt=R, T, Num1

Except numpad binds... Kinda yeah
I don't remember pressing the numpad ones even once

I only put stuff to numpad 0 and 1 because I usually do put stuff there when I play a game with arrow keys due to them being easily accessable with pinky finger especially the num0 button
Will they ever come in handy ? I doubt.
But why not go for it anyways considering I already went overboard with my Airdash/Defend binds