I am el Iron Kled main DemiLime, all jokes aside this guide is mostly from SoulMario's stream and im just writing it down.

Pros:

Highest Base Health
Sticky
Is pretty good at baiting enemies
Good roams
Great Voicelines

Cons:

Highest Base Health in the game
Q is a thin skillshot
His W is automaticly activated

I assume you already know how Kled works, if you dont check out FEEDABOIs guide.
Kled dismounted q can be used to cancel your auto by using it against a wall or being rooted.
You can save a level on Kled to use kled w like an active ability one time.
Dont be obssesed about long range Kled r, short range kled r still does damage and can be used like an extra dash (in place of flash).

E + Q is your main combo as you can use E mid Q.

All of Kleds Skins are Mediocre
Base - Pretty nice, free
Sir Kled - If you can stand Kled's teeth then its alright
Count Kled - Cool looking but pay to lose, Q hitbox does not match Q size.
Marauder Kled - Cool looking but quiet W sound is too quiet, potentially pay to lose.
Dog Kled - I hate it