Username with changed...

[ConanEdogawa142]

oaeoaa142

Type your name with the word 'pizza' hidden in it

Example: pconianzedozgaawa142

[breva]

pbirzezvaa

capitalize the first, third, fifth,etc... letter of your username

[KainTheVampire]

KaInThEvAmPiRe

Use colors to make your username into a rainbow ^^ If your name isn't long enough, add "!!!"

[breva]

breva

Remove the second, fifth, seventh, tenth letters from your username (if it doesn't have that number of letter, only remove what you can obviously:P)

[Callid]

Clld
Just the same as removing the consonants in my case

For the first even letter, go one step forward in the alphabet, for the second one two etc., and for the first odd one go one back, for the second two and so on.
Examples:
Callid = Bbjnfg.
ATP = ZUN.

[breva]

ascxx
it isn't too bad

Replace the vowels in your username with the same letter but with an accent --> (á, é, í, ó, ú)

[Callid]

Cállíd
Write your username while using as many diacritics as possible, e.g. Čắḽĺȉá¸

[Dus]

Ã

[Akonyl]

Флщтнд

type your username with the key below each key on the keyboard (if there is no key below, use the key above, so Akonyl= Z,l h. ). Use whichever key you think lines up better below it.

[Dus]

Xjx

Write your username WITH YOUR NOSE.

[Callid]

Callid

If you do it rather slow (and use Caps Lock), it's completely manageable

Idem Akonyl, but with above instead of below, but use only letters, e.g. Dwoome = Callid.

[Hoshi, tantei-chan]

Ymwym, vqhvxm-dyqh

Remove every second letter

[Callid]

Cli

Remove every character according to the Fibonacci numbers, i.e. the 1st, 2nd, 3rd, 5th, 8th etc. Blanks and punctation marks count as characters.

[Hoshi, tantei-chan]

h, ante-chan

Write your name backwards

[tantei.conan]

nonac.ietnat

type your name with your elbows