Gretchen Grimlock is a character on an online website called Poptropica. She steals a lot, if you play, and takes away "monsters" from Crypt Kids island. But really, their creatures like big foot, and nessie.
You costumize her.
cryptids island on boat then heilcopter
you don't, you wake up in his mansion after being attacked by Gretchen Grimlock
When you catch Gretchen Grimlock's helicopter, jump onto it from yours, then click her gas cap and fuel will start coming out. Cut loose the line to Bigfoot's cage with your gardening shears, and you both float safely down on the cage's parachute.
When you get the Kite Surfer from the kite shop, go try it out at the Cliff Park (far left).
you dont, when you complete the other monsters mews will put pacific northwest on the helicopter and you really have to save bigfoot from gretchen grimlock
You get the Island Medallion after you prove the existence of three of the four cryptids, and rescue Bigfoot from the evil Gretchen Grimlock. (see related question)
She is an unscrupulous fortune hunter out to profit from the cryptids she finds. She sabotages your kite surfer, then appears at the end to try to kidnap Bigfoot. (see related question)
There is no way to avoid her attack. You are saved by Mews and taken to his mansion, where he has a museum dedicated to the mysterious creatures (cryptids) of the world.
In the final scene with Bigfoot and Gretchen Grimlock, you have to jump from copter to copter while avoiding the blades. Reach down and open the gas tank to force Gretchen down and save Bigfoot (you cut the rope and ride down on the parachute with his cage).
You save him from Gretchen Grimlock by gettting close to her helicopter, jumping across to it, opening her fuel cap, then cutting loose the Bigfoot cage with your shears. You will float down on its parachute.
Once you get the surfing kite, you will be attacked by Gretchen Grimlock and rescued by the Mews copter. At the Mews mansion, review the videos on cryptids in his museum and you can use the helicopter to go in search of proof.