Looks.(art isn't mine) 

His fangs.

Name; Alexander Oliver 

Nationality; American/Australian

Occupation: marine biologist 

Hobbies: Cooking reading Music Studying animals  Weaving,and enjoying simple things

Likes; Reading, sea creatures peaceful things, and the simplest things in life

Dislikes: Athena, criminals  Innocnets getting killed, and feminism 

Species; Human/Atlantean

IQ: 560 Intelligence 

His stingers.

Age: 23

Personality; Sarcastic snarky and likes to joke around(towards Enemies) but is Smart, kind caring, and friendly 

trait: Cursed(he was cursed by Athena to have the full transformation of a Spider  as the reason for His curse was, cause he stole a weapon from athena and acted like a snarky idiot doing it as the curse effect on him is when, he transforms into a Spider monster he's in agonizing pain.)

Powers and Abilities

Hybrid physiology

Oni physiology(from the physiology of the tsuchigumo thanks to the spider totem)

Arachnid physiology; has the physiology of an Arachnid.

Hydrokinetically Enhanced condition: he Augments his Own physical attributes by using Water making himself stronger than normal.

Superhuman condition: he's physically strong at the superhuman level.

Accelerated Muscle Development(can gain more muscle through working out)

Muscle Mass Enhancement(he can enhance his own muscle mass to get more strength)

Dense Muscles(his muscles are dense and stronger than normal muscle)

Extrasensory perception

Multiple-Brains(like a spider he has multiple brains and is alot smarter than the average Atlantean as it's two brains)

Bio-Augmented: The user's biological structure has been augmented artificially, granting a variety of abilities.

Soul manipulation(he can manipulate the soul in a similar way to the undertake character Muffet 

Illusion manipulation(he can manipulate illusions and use them to troll villains)

Fluid absorption(as a giant spider he can absorb fluids like blood water sweat and etc)

Fluid manipulation(he can manipulate fluids in someone and absorb it through his giant spider forms limbs and even gain power from fluids)

Storm manipulation:(he can control the storms and use them to smite his own Enemies)

Superhuman bodily Aspects; He has superhuman bodily Aspects

Atlantean technology; He has access to Atlantean technology.

retractable claws(his claws are retractable and used to cut through Strong machines)

Aquatic Adaption:(he can adapt to the Aquatic Ocean as his pours are allowing him to breathe and adapt underwater)

Auto-Reflexes; He can dodge automatically when He's enhancing his own Abilities with water.

Seismic Sense; can perceive vibrations through the earth.

Wallcrawling; he can crawl up solid surfaces.

Silk manipulation: he can generate and manipulate silk itself.

Web manipulation/Web Generation: can generate and manipulate his webbing.

Spider sense; He has the sense of a spider and can dodge any attack when his spider-sense is used.

Lesser divinity(he has a lesser form of divinity)

Hive mind(in an army of spiders he's created a hive mind)

Accelerated healing factor; He can heal any wound from any damage he suffers.

Water breathing; He can breathe underwater longer and survive the pressure in the ocean due to having the ability to breathe underwater like a giant sea spider.

Bubble Generation: Like the diving bell spider he can generate bubbles to catch Criminals to lock them up and be able to use them for combat.

Immunity to vampirism, Poison parasites diseases, and Viruses 

Resistance to heat and the cold 

Cryokinesis: He can control and manipulate ice itself to freeze someone alive

Water manipulation: He can manipulate the water to use for combat.

Venomous Fangs; Like a Water spider his Fangs are venomous.

Poison Generation: he can generate poison to knock someone out or Kill them.

Retractable Fangs; He can retract his fangs

hydrokinetic Flight; He uses the water to help him fly in the air.

Bio Electricity manipulation: can control bioelectricity.

Miasma Manipulation: Can create and control miasma itself.

Hydro-Telekinesis: can telekinetically control someone using water.

Water Detection: he can detect water.

Water Empowerment: he gains power from the water rain and ocean.

Water Mimicry: he can mimic water itself.

Appendage Generation: he can generate any form of an Appendage allowing him to create extra limbs.

Chemistry manipulation(he can manipulate the chemistry and use it for combat)

Hydrokinetic Intangibility: he can become intangible through the water.

Pressurized water manipulation: he can manipulate and control pressurized water.

Water Form Manipulation: he can manipulate the form of water.

Vapor Manipulation; Can manipulate hot vapor to burn someone.

Steam Manipulation: he can control the steam to create a way to attack without being seen.

Blood Manipulation: can manipulate blood by manipulating the water inside of the human.

Boiling: he can in fact manipulate the blood in someone and make it boil to the point their body is under his control.

Fear Inducement(through his larger size in his tsuchigumo form)

Matter Ingestion(he can consume any form of matter with ease)

Infinite Digestive System(can eat more food than a normal human)

Underwater Senses: His senses are Increased when underwater.

bulletproof skin: he has bulletproof skin that can help him tank and survive bullets.

Rain Manipulation: he can control the rain and summon it to grant him power.

ocean manipulation: he can manipulate ocean water and use it to his advantage.

Climate manipulation: can control the climates themselves.

Water Healing: can heal using water itself to heal anyone.

Buoyancy Manipulation

Water soul: His soul is aquatic and connects to the ocean,

Fluid Constructs(he can create a construct made up of any fluid)

Fluid Generation(he can generate any fluid casually)

Fluid Solidification(Can make a fluid-solid)

Fluid Transformation(he can transform anything into a fluid)

Gas Manipulation(he can control gas and use it for combat or blind someone)

Air Manipulation

Plasma Manipulation

Viscosity Manipulation

Story manipulation(he can manipulate different stories as a reference to the spider god anansi)

Fluid Friction Manipulation( The user can create, shape and manipulate fluid friction, the force from fluids that resists movement of objects moving within them. They can manipulate viscosity, velocity and heat, as they are all part of fluid friction.)

Weaknesses: His Spider-sense can be disrupted  

techniques 

Water beam: He can fire a beam of water to damage someone with pressure added to do damage

Bubble trap: He creates a Large bubble made up of Dense water that would trap his own enemies where they can't break out and only Alexander can let them go.

boiling Blood technique: He causes those to have a stroke heart attack and kidney failure 

Smite; He can smite his own opponents Electrocuting them.

Mariantette: he uses his webbing and controls his Own opponent basically making them into his own little puppet.

Drowning; He drowns the person's lungs by forming water inside the lungs making them have a hard time breathing.

Arachnid Swarming(once he's in an arachnid form he can swarm an enemy with multiple Spiders both Attacking and harming the body of the victim)

Water barrier; He forms a barrier allowing him to survive Energy attacks

toxic Water; He fuses miasma with water and causes people to get poisoned by it leading to either they are dying or falling unconscious due to the effects.

Pet.

Name; Anansi 

forms.

 Water Elemental form: he uses it to tank stronger impact and take on foes who can do more damage to his body.

 Tsuchigumo form(it is like a giant sea spider and the giant sea spider while able to handle the ocean is able to suck fluids out f bodies as it also combines the powers of a Tsuchigumo)

Arachne form

Werespider/man-spider form(this form is used for combat as it's connected to the spider totems and is a dangerous form to use in combat)

Full were-spider form/Manspider form(a full form where he unleashes a beast form Where he can release more power of strength that the human body doesn't have)

Final Spider form(this is the most cursed form he has where,it involves his body becoming monstrous and grants him power at a cost of feeling pain when transforming)

Suit.

Alternate suit.

the spider that gave him his powers.

The Diving bell spider.

pairing

Muffet

Trivia.

He's related to the Atlanteans and has connections to technology of atlantis and many things.

He's been able to turn into Aquatic creatures but focuses on his Abiltiies as a spider hero.

he doesn't waste his time and instead Likes a peaceful life.

he's met namor and gets along with him.

He knows how to adapt in the ocean when he's in water.

the more water he absorbs the more power he'll gian.

he can be mistaken for a deity just by his abilities being beyond human.

his manspider form is used for combat and being able to destroy people made up of fire.

he's very much Christian but doesn't talk about it that,much since he knows he's gonna get assumed as one of those fake Christians who attack people cause of their sexuality or Cause the person don't agree with what they say.

he's against spreading hate but wants to joke around for a bit.

How he gained,his transformations is through a curse athena, placed upon him but instead he used it for good and learned how to transform and revert back into,a human form

he doesn't get people who act silly and,make up stuff just cause it makes them feel better.

He has lesser divinity due to his transformations,being a curse related to athena.

He used to be pegan but after Athena cursed him he,left and became Christian.

it took him months and years,to learn how to revert to human form.