Grayson, and Drake are the best robins, every one else is an impostor
Tim was something of an amateur detective.He had studied Batman. A boy with a Hobby.
Jason had died.Bruce was alone .Angry....Tim recognized that anger, and decided to do something about it.
He managed to accomplish what few others have been able to..
He deduced that Batman, and Bruce Wayne were one in the same. Furthermore, that Dick Grayson had been the original Robin...
Tim clung to a theory that Batman needs a Robin. More then just for a legacy, but as a balance.
Batman had taken both Grayson, and Tim in when they had no place to go, But Tim sought out the role. He wanted to be Robin.
And as hard as Bruce tried to convince him otherwise, Tim worked for it.
Dick saw being Robin as a thrill. It's probly why he outgrew it...
Jason saw being Robin as a game. It's probly what got him killed.
But...Tim....I have to hand it to the boy...
He wants to be the world's greatest detective, and from what I've seen so far...
He will be someday.