ok here is what i got for you all

Name: Putty
POWERS/ABILITIES:
- Extremely stretchy and flexible body. Body can be twisted and contorted to extreme lengths. Due to this highly malleable body, Putty is very resistant to most forms of physical abuse. Bullets bounce off and sharp objects just sink in.
- Body can become sticky at will. This allows Putty to stick to and climb on nearly any surface.
WEAKNESSES:
- Very cold temperatures cause Putty to stiffen and become less stretchy

Name: Mindmesser
POWERS/ABILITIES:
- Telekinesis and telepathy.
- Can create various illusions and hallucinations
- Telekinesis allows Mindmesser to hover and levitate
WEAKNESSES:
- Mindmesser is relatively weak and has very low durability
- Sonic devices can cause Mindmesser to lose control of his mental abilities

Name: Earthshaker
POWERS/ABILITIES:
- Front arms can vibrate at super-high speeds causing seismic tremors in the object his arms are in contact with (This means, he can cause earthquakes, shatter material, and cause things to shake and fall apart)
WEAKNESSES:
- Power only works if front arms are in contact with some sort of solid surface
- Earthshaker is not very fast and possesses a somewhat delayed reaction time

This is Sandbox. He is one of the aliens mentioned by Ben in the episode Ken 10 (or whatever the episode was called). I have decided to draw the five mentioned in that episode. I envisioned him being a lot like Sandman.
POWERS/ABILITIES:
- Composed of a organic sand like material
- Can gain mass by absorbing dirt and sand
- Extremely resilient and durable
- Can form shapes out of sandy body
WEAKNESSES:
- Mass amounts of water can cause Sandbox's sand like molecular bod to become unstable and loose it's molecular bonding. Causing Sandbox to loose it's composure

Here is another one of the aliens mentioned in the Ken 10 episode. His name is Atomix.
POWERS/ABILITIES:
- Body emits high levels of radiation
- Fire powerful blasts of radiation ranging from micromave to gamma
- Any form of radiation is useless against Atomix
WEAKNESSES:
- Atomix is extremely dangerous and is only used in dire causes. Anyone near him is in danger of radiation poisoning

Here is another one of the mentioned Ken 10 aliens. Ken says that Toepick grosses him out and would rather have Grey Matter. With this little bit of info, I decided that Toepick would be about the same size as Grey Matter (since he was a comparable trade). I also made him look like something that someone might pick out of their toe.
POWERS/ABILITIES:
- Toepick is only 4 inches tall, and is thus very inconspicuos
- Toepick can throw globs of a pus like substance
- When pus comes into contact with people or other aliens, pustules similar to those found on Toepick form at spot of contact
- Can stick to surfaces
WEAKNESSES:
- Small stature leaves Toepick relatively ineffective in many situations

Here is Snakepit. His name was just mentioned. No comments to aid me in what he might look like. I decided that I would make him Hydraesque.
POWERS/ABILITIES:
- Five snake like heads possess extremely fast reflexes and allow Ben to calculate and analyze battles and other things with greater efficiency
- Possesses non-lethal, neuro-paralytic venom
- Powerful hind legs give Snakepit enhanced agility and speed
WEAKNESSES:
- While able to calculate situations with greater speed, the five heads all possess different minds and if agitated to a certain point, that may fight amongst each other.
- Snakepit is cold-blooded and cold temperatures cause him to become much more lethargic

Ken was not to happy learning that one of his alien would be Shellhead. All he can do, as Ken said, is hide in his shell. Upon this comment I knew that Shellhead wouldn't be to "awesome".
POWERS/ABILITIES:
- Shellhead's shell can withstand near any type of damage. Lasers, physical attacks, extreme heat and cold; nothing can hurt Shellhead as long as he is in his shell.
WEAKNESSES:
- Possesses no offensive attacks
- Slow-moving and surprisingly weak

rock hard
POWERS/ABILITIES:
- Skin is made of an organic, super-hard rock like material
- Is invulnerable to most attacks
- Can detach and launch arms at opponents (creating ballistic arm missiles)
- If part of Rockhard is broken or damaged, he can regrow it
- Mental manipulation of rocks
WEAKNESSES:
- Extremely heavy, and can drown if submerged in deep enough water

ben dactle
Powers & Abilities:
1. Expert Flyer
2. Incredible Strength (enough to lift an object 10 times his size into the air)
3. Durability
4. Keen senses of sight and hearing
5. Can release an ultrasonic screech (similar to Benwolf's sonic howl) to blast foes.
6. Can create 100 mph winds by flapping his wings hard enough.
Weapons:
1. Beak
2. Claws
3. Talons
4. Tail
Weaknesses:
1. Wing membranes are fragile and can be easily damaged.
2. High pitched sounds cause pain to Bendactyl's sensative ears.
3. Being cold-blooded, he is vulnurable to temperature extremes.

NAME: Muscleman
POWERS/ABILITIES:
- Body is composed of something resembling human muscle tissue. Muscleman's body however, is much more resilient and elastic than that of normal muscle.
- Parts of body can expand and increase in size. (Arms, legs, hands, chest, etc.) This allows for more powerful attacks and enhanced strength.
- Can increase and expand entire body to grow in size.
WEAKNESSES:
- The more Muscleman expands, the greater the strain on his body. He can handle a good deal of it, but after continual use, muscle fatigue begins to set in.

NAME: Teleportal
POWERS/ABILITIES:
- Teleportation of self and others
- Prehensile tails
- Very agile and acrobatic
- Keen senses
WEAKNESSES:
- Low durability/easily wounded