the young justice one looks very sidekick after kaldar
the titans one looks more his own person

i wish there was a grath that is wearing the titans costume but the animation style of YJ

Edit:
there is also the flashpoint costume
[img=http://31.media.tumblr.com/485d15fcb07d5c36b16d85d5f98a6159/tumblr_mq59blDVer1s4elyto3_1280.png]