User blog comment:Sir Grox/Replacement for Sion?/@comment-5038450-20121013121056

Olaf is pretty straight forward, similar to Sion. Run in smash everything in sight, while sustaining pretty well.

Another choice I'd suggest is Jarvan, he does a really good job at getting into a fight, and staying there, pounding away at the enemy team.

Jax is a very powerful pick, not only does he do strong DPS (with some burst) damage, his ultimate gives him survivability based on offensive items, and the dodge makes him hard to fight at top as well.

Maybe... Yorick? He's a good champion, durable, good sustain, good damage, and you get a second life as well. I hear he's not too good now though, after the nerfs.

And... why not Renekton? Not sure if your friend favors casters compared to DPS bruisers, but he's pretty fun.