If you go in the index post on the monster classes subforum there's a set of tables that FireInTheSky made which have nearly all the classes with info including total stat mods (and total levels so you know how quickly they come.)
For Int/Wis, there's a few decent ones but most of them don't look human, so they wouldn't be ideal for Hugo (if that's what you want them for.)
Mindflayer is 8 levels with int boosts at every level. Force Golem is 4 levels with the same.
If you do want human looking, Doppelganger is 3 levels with a boost at each level that can boost anything (switch as a swift action.)
For wis, Derro gets +4 over 3 levels. Anthropomorphic Animal can pick an option at lv 5 or 6 that gets it +4.
If you're willing to spend a feat, there's a monster feat that can switch stat boosts from one mental stat to a different one and you could combine that with Sucubus, which gets large cha boosts and is human looking.
EDIT: A few from the template classes which aren't covered by the tables yet,
The Chaos classes give die based bonuses to any stats you want (1d3 for 2 levels, 1d4+1 for 2 more and 1d6+1 for 2 more) and are appropriately sci fi themed (being warhammer 40K inspired)
Paragon can only be taken at lv6 and later but gives +2 to two stats at 2nd and 4th and +2 to three stats at 7th and 9th.