Master of the Fallen Fortress- Rebuilding Tasskar at higher level, and having trouble understanding how he was built

[Ulmaxes]

Title is lenghty but says it all. I am trying to bump him up for a group of four lvl 3 adventureres, and am having trouble figuring out how he was actually made.
I plug him into Hero Lab and instantly have no idea where a couple of things came from. He doesn't have Great Fortitude like a normal Trog, ok, I can handle that (HL can't, but that's not my main issue). I'm most interested in where his Ability Scores came from. They don't match up to The normal or Heroic NPC arrays and clearly aren't a normal Trog's ability scores. Where did these numbers come from?
If it's completely custom I can respect that, but if his stats were derived from the Pathfinder standards for creature building I'm lost.

Here he is for convenience:

Spoiler:

XP 800
Male troglodyte druid 3 (Pathfinder RPG Bestiary 267)

NE Medium humanoid (reptilian)
Init +5; Senses darkvision 90 ft.; Perception +8
Aura stench (30 ft., DC 13, 10 rounds)

Defense
AC 17, touch 11, flat-footed 16 (+1 Dex, +6 natural)
hp 32 (5d8+10)
Fort +9, Ref +3, Will +6

Offense
Speed 30 ft.
Melee mwk scimitar +6 (1d6+2/18–20), claw +0 (1d4), bite +0
(1d6) or
flame blade +6 touch (1d8+1 fire), claw +0 (1d4), bite +0 (1d6) or
2 claws +5 (1d4+1), bite +5 (1d6+1)
Ranged dart +4 (1d4+1)

Spells Prepared (CL 3rd; concentration +5)
2nd—flame blade, summon swarm
1st—magic fang, obscuring mist, produce flame
0 (at will)—flare (DC 12), guidance, resistance, virtue

Tactics
Before Combat: If alerted to the presence of intruders, Tasskar
casts magic fang on his crocodile before combat.
During Combat: Tasskar summons a swarm of spiders with
summon swarm and then casts produce flame to throw flames
at opponents. He spontaneously casts summon nature’s ally to
summon a giant centipede if he feels he needs more allies in
combat. If pressed into melee, Tasskar casts flame blade.
Morale Tasskar is a fanatic and fights to the death.

Statistics
Str 14, Dex 13, Con 14, Int 10, Wis 15, Cha 9
Base Atk +3; CMB +5; CMD 16
Feats Combat Casting, Combat Reflexes, Improved Initiative
Skills Climb +6, Handle Animal +7, Knowledge (nature) +6,
Perception +8, Spellcraft +6, Stealth +8 (+12 in rocky areas),
Survival +10
Languages Draconic

SQ nature bond (crocodile animal companion named Snapjaw),
nature sense, trackless step, wild empathy +2, woodland stride
Gear darts (4), masterwork scimitar, cloak of resistance +1

[Xuttah]

Maybe you can reverse engineer him trying 10, 15, 20 and 25 point builds? One of them might work.

[YogoZuno]

He's an NPC - he doesn't need to follow any particular number of points or build, nor does he need to match his race average. I would suspect he was built custom to suit whatever the writer intended.

[Ulmaxes]

A lot of the NPCs actually do follow either the Heroic NPC array (15-14-13-12-10-8) or Basic NPC (13-12-11-10-9-8). Mostly the former if they're a relevant stat-ed NPC. I couldn't get him to follow either of those arrays OR any of the Point Buys. :/