To unlock the following characters below, do as the following.

Daxter- Accumalate (play) 5 hours of gameplay

Pecker- Accumalate 10 hours of gameplay

Jak 1,2,and 3- Have a saved game from Jak and Daxter, Jak2, and Jak3 and select scan for secret characters option at the secrets shop.

Ratchet- Have a saved game from Rachet and Clank Deadlocked and select scan for secret characters option at the secrets shop.

Sig- Beat the Spargus City Death Match.

G.T. Blitz- Beat the game.

Keira- Beat the game.

UR-86- Win the second Red Eco Cup Qualifier.

Kaeden, Osmo, Tayrn, and Ximon- Hook up your PSP with the PS2, have Daxter in the PSP, select connect to Jak X, Combat Racing in the secrets menu, and select scan for secret characters option at the secrets shop.

Rayn- Win the Blue Eco Cup.

Razor- Win the Nothern Tour Circut Race.

Thats it I think. Oh and one other thing. To unlock the Sand Shark from Jak3, complete Jak3 and when you've almost completed JakX, scan for secret characters
And it will be in the secrets shop for 50,000 Orbs.

If you drive inbetween two pickup, example yellow eco, and blue eco, you will get both, also, if you see you have a red eco weapon like the sheild or machien gun or something that will stay with you, and you are coming up to a red eco pick up, use your current red weapon, and pick up the new one, it's like you have 2 now to defend against oppents fire

When it says loading fiddle around with the analog sticks and it goes a bit random

I was playing for about 5 hours and 33 minits.And for some reason after that I went
To see if I unlocked any new secrets.And I saw daxter for 50000 orbs.
I bought it.And I had daxter as a secret driver on 2player.
Me and my friend were fighting over who got to be daxter.Hope you enjoy this!

If you want 2 get rich real easy do the following: Go 2 multi-player mode and select a person for both controllers Change laps to 1 (or whatever) and start the race do the race by yourself you will win 2500 orbs without even racing anyone.

When the screen says "loading" move the left analog stick to move it.
Also use the right analog stick to make it bigger.

First, in order to unlock these characters you need a USB connection cable for the PSP, a PSP, Daxter, A Playstation 2 and Jak X Combat Racing.

Connect the USB cable to both the PSP and the PS2. Both the PSP and PS2 have to be on at the same time. On Daxter, go to the secrets menu and click "Connect to Jak X Combat Racing". After that is done go to the Secrets Shop on Jak X and click Search for Secret Characters. The following are what should be unlocked

1: Kaeden and Taryn. (tested with a 100% completed Jak X and a 25% completed Daxter)

2: Osmos, Ximon and the Daxter mobile (tested with a 100% completed Jak X and a 100% completed Daxter)

If you ever have a need to get a realy big power slide heres a simple way to do it. First get about half to full filled up on your boost meter. Then boost while holding down the circle button and a diction. You will go in a circle. As you build up a power slide, your bost will fill up allowing you to countiune to do this non stop (or until you get bored).