BG2 won't work on my computer so I'll have to go by memory and the manuals as best I can. I can't possibly remember specific items though so just give the guy something decent, doesn't matter if it's a basic +2 or +3 item.
Serrano, half-elf, mage/cleric, lawful good, str 12 dex 10 int 18 wis 18 con 10. Weapon skills should go into staves and slings. Gear consists of a robe, chainmail, staff, sling with 9 slots of ammo (including the 3 in the quiver), a few scrolls for essential spells like barrier breakers, summons and a couple of healing potions. Boots of speed, or haste or whatever they were called would also be appreciated.
I'd default him as a support character who heals, buffs, debuffs and summons fodder (and suggest both lvl 6 slots be reserved for planar ally and earth golem) but the main idea is that between the two books he should be flexible enough to fill any role required after a quick nap.
I'm terrible with bios so my character is someone who simply hates to talk about himself.
Is that detailed enough or do you need specific things like number of hit points, memorized spells ect?