Incoming wall of text!
I'll submit this guy for consideration. I assure you, this is not a min-max build concept. It is certainly built to maximize his usefulness in a particular way and shorting him in others. However, this wasn't done to power game, this is purely for RP reasons. I've played this guy briefly in the past and he was an absolute blast to play and the group did have a great time with him around. His primary quirk is that he only follows the last instruction given to him, which sometimes results in comedic situations. He once pushed a team member down a cursed well...twice. He was just following the last order and the group forgot to tell him to stop. The only time he breaks this instruction rule I've set is when small fuzzy creatures are involved. Sometimes this includes particularly hairy gnomes. He is not a violent person by nature, and he vaguely understands right from wrong, he is a quintessential 4 year old who relies on his "parents" (or group members) to have him perform appropriate actions. Therefore, if he does an evil act it's only because he was told to by a group member. In terms of combat his mental deficits made up for in brute force and strength. He is physical perfection, and it's represented when he attacks. However, he doesn't know his own strength, so even when given the instruction to attack but not kill a target he will still swing with full force. Not on purpose, just that he doesn't understand how strong he actually is.
Basic Stats: You can see the build in the profile, updated for your requirements are Con 16 instead of 14. HP per level rolled out to 9 for level 2 and 6 for level 3 adding up to 34 at level 3. Gear is changing what I've listed already to a +1 Lucerne Hammer and switched armor to a chain shirt. Skill changes are Acrobatics and Intimidate for Adventure Skills (and Intimidate is exclusively used when other group members threaten to send Cim after them, so it's not so much Cim doing the intimidating it's just the mechanics of rolling my intimidate score to represent the other party member's threat), and background are Handle Animal and Profession (Bodyguard).
Roleplaying sample:
*WHAM*
The door to the tavern bursts open. Standing out side in the rain is a very large man taking up the entire doorframe. He is tall enough that the top of his head isn't visible, and it's clear that he's holding a great weapon slung over his shoulder. The light of the tavern cast into the darkness of the night obscures his features. A few of the bar patrons gasp at the sight, and one of the bar guards reaches for his cudgel.
The man ducks down and steps through the doorway. He has a scowl on his face. The shadowed features he had outside clarify into every bit as menacing a picture when in full sight. The room goes silent as he stands there taking in the room. The tension is mounting, and the people are afraid.
Then all of the sudden, "Hi!" says the giant man. The voice is thick and booming. It is the sound you would expect from a grisled military commander, a voice you can trust for strength and power. But...there is something off. It doesn't fit with what everyone sees. The sight is threatening, the sound is raw power, and yet the word is spoken with a tone of excitement that you expect your neighbors small child to give when meeting a family friend for the first time. The word hangs in the air, some of the fear starts to turn to confusion at the odd mix of power and childlike quality to the man's word.
The band begins to play to try to cut the tension. Cim's face splits with a great smile. He starts to laugh growing in intensity. Much of the crowd turns to the band to see what he could possibly be laughing at only to find nothing out of the ordinary.
*CRACK*
The crashing sound behind much of the crowd that turned to look at the band is immense. A few of the barmaids scream, startled at the sound. Cim's laughter continues and as the crowd turns to see what caused the great sound they see this giant man, still laughing, has droped his hammer to clap at the music. The site is otherworldly and certainly confusing, but it's clear this man is no threat. He's a nearly 7 foot tall child, clapping at the music...
End Sample
As far as types of adventures, I'm neither here nor there on setting. I appreciate creativity in solutions to problems faced, though. The roll to hit, roll damage, rinse and repeat can be fun to see big numbers and such. However, I always appreciate when a group comes up with a solution to a problem that isn't necessarily number crunching. For example, once while playing a goblin based game we were fighting an owlbear. Our group happened to find a vial of Soverign Glue during the adventure. I was an alchemist and my tablemate was a rogue. Clearly the solution was to have him run and jump towards the owlbear's back while I hurl the open vial of Soverign Glue in the air. We effectively glued the rogue to the owlbear's back. Great fun, definitely didn't jive with the rules entirely (although there was a lot of dice rolling required for the trick to work), but was just fun enough for the GM to let it slide for comedy. Besides, the draw back eventually became a small goblin permanently glued to the back of a large owlbear with no solvent. But hey, goblins don't think that far in advance! My point being, I'm open to anything in the world (and by default Cim has to be based on how I've designed him), but I do enjoy allowing the hilarious interactions more than not within reason.