I wish I had a father like that :[
Well... In all honesty
is pretty awesome as you can build anything on him and still do something useful.
is a mechanically unchallenging champion although to me he isn't the funniest guy around.
I can sense him feeling somewhat awesome with
, taking in account its all point and click and looks flashy. However warn him to avoid cancelling Death Lotus himself :]
I love Nunu so much. Its just that walking animation, the simple abilities, the not overloaded kit, the different build options. I can't keep him out of this list.
Nothing beats throwing axes as Olaf. In my early levels all I could want was playing him. I realized he isn't the most viable champion all around, and will only buy him this week, probably, a long time afterwards, but I really doubt he isn't fun to play. Olaf mixes a little bit of aiming, a little bit of auto-attacking, some build diversity and plenty of meaningful choices about when to ult, while being relatively easy to grasp his mechanics.
Shaco's kit is a blast. He isn't easy to play (unless he goes AP, that way he is about as difficult as Cho'Gath, but not really anything compared to AD) but I guarantee its nice to play him even if you aren't very good at Shaco. I still recommend him if you run out of ideas about what champion to go for next.
A very straightforward assassin. Talon isn't very simple, I'd say he is moderately difficult. But I am sure his kit is definitely fun to use and learn. Plus he is a very stylish and flashy assassin, a bit like Katarina, so I guess that he can be really enjoyable to play as.
Believe me or not, one of the least viable champions is actually a very fun one. Urgot is by no means, an easy champion. He is skill-shot reliant and heavily mana-hungry. However, his machine-gun-like Q is pretty neat to use, and he feels rewarding especially once you land an E.
The most difficult part about Voli is not messing up the fling, and not getting kited to death. Those aren't really big issues in bot matches, so I must say I recommend Volibear too. He was my first main and I have a blast with him. However, his long cooldowns might be a little unfun (compared to shorter ones) for your son, so you might want to go for someone else.
Honorable mention:
The first champion I actually got decent with. I bought Veigar when I was a (bigger) noob and tried my best to master his E. He wasn't challenger material, but still quite a blast (literally). After this patch, his skill-cap increased quite a lot, and I don't have really much fun with him anymore, but I am sure he is still playable in bots.
Hope I helped!