Ok folks we gonna be talking about Steven universe and why he won't join the roster.this is gonna a rejection chapter.

Steven universe

Age:16(currently)

Steven universe is a half gem/human hybrid born from pink diamond who give up her existence for him to be born.he a cheerful, kind-hearted, carefree and an emphatically person.

Being a half human/gen hybrid he possess powers from her mother:

Powers/abilities:

Shield Proficiency: Due to possessing his mother's gemstone, Steven can summon Rose's shield. Steven is able to summon his shield at will with little effort at any moment he requires it and increase its size at will. Steven can summon his shield as many times as he wants without tiring, even summoning more than one and dual wielding shields, and he is able to use it in conjunction with his protective bubble as an added method of defense. The shield is remarkably durable, able to withstand a charged shot from the Gem Warship, and has reflective properties strong enough to reflect a laser fired from a scanning Robonoid.

Projectile Shield: Steven can throw his shield as a projectile with great speed and power, weaponizing it as a ranged attack with enough accuracy to temporarily stun opponents. He can boomerang his shield off of several targets, causing it to return to his hand, and his shield has razor-sharp edges and can cut through substances as tough as solid rock before returning to him.

Shield Vibration: On certain occasions when Steven's shield is hit, it emits an audible vibration that disables magical constructs, such as Lapis's water clones and Holo-Pearls.

Shield Dash: Steven dashes towards his opponent and knocks them back with his shield, can run through multiple enemies and stun enemies.

Bubble Shield: Steven can summon an incredibly durable bubble forcefield that encases him and others that he is protecting. Steven is capable of summoning it reflexively, can expand his bubble to push away enemies and break free from being trapped inside a solid object, and can can "pop" his bubble to knock surrounding enemies back. Besides the bubble offensively popping, Steven's bubble has shown the ability to grow larger and smaller. The bubble can generate its own internal atmosphere, allowing Steven to survive in the bubble for hours underwater despite it being air-tight, and Steven is even able to breathe inside one he had just generated in the vacuum of space. He can also project his bubble around others and can create multiple bubbles in this way.

Shape Alteration: Steven can change the size of his bubble, as well as change its shape from a sphere into a variety of other shapes – for instance, causing sharp spikes to appear along its surface, or stretching it to encompass and protect other people.

Bubble Helmet: Steven can create a small bubble around his head to breathe in an oxygenless atmosphere or protect his head from damage.

Bubble Gloves: Steven can create small, hard bubbles around his fists like boxing gloves, enhancing the strength of his punches and his ability to block attacks.

Shapeshifting: Steven possesses some level of the natural shapeshifting abilities typical of Gems, being able to transform parts of his body into cats and stretch various parts of his body at will. However, despite having more control over this power than initially, he can only do this for a certain amount of time and his half-human nature puts more of a strain on his body than it would a Gem. As of Future he shows that he can completely transform into a Gem monster many times his size and height.

Fluctuating Age: Steven can manipulate his age through his state of mind, his physical age depending solely on how old he thinks he is. Uncontrollable age-changing could also potentially be caused by his emotions like most of his powers. This ability is an extension of Gem shapeshifting, however, due to his organic half, by shapeshifting into the body of an elderly man, Steven's body may actually fail as a result. As of Future, he demonstrates the ability to age-shift into his younger self and a more mature version of himself at will without his body becoming unstable.

Healing: Steven's saliva has the power to heal the injuries of both humans and Gems, and even inanimate objects. Steven's healing capabilities have not yet been seen to the full extent of his power, but he is shown to be capable of healing cracked gemstones, common human injuries and conditions such as poor eyesight and broken bones, and broken inanimate objects such as a torn stuffed animal. This power also heals Steven passively, with Steven having healed numerous bone fractures and severe physical trauma over his life without even realizing it.

Resurrection: Like his mother, Steven possesses the ability to resurrect the dead with his magic tears. The recipient turns pink and gains special abilities, such as the ability to grant access to the Pink Dimension through their hair as well as an extremely slowed metabolism and heart rate. Two known cases of this are Lion and Lars.

Corruption Reversal: When combined with the powers of the other Diamonds, Steven can permanently reverse the effects of the Corrupting Light on Gems.

Shatter Reversal: When combined with the powers of the other Diamonds, Steven is able to completely repair a shattered gem.

Life Creation: Like his mother, Steven possesses limited control and influence over plant life. Using his healing saliva, Steven can grow sentient and sapient flora by licking plants or seeds. These plants vary in intelligence depending on Steven's emotional state; Watermelon Stevens acted as Steven's bodyguards due to him being unsure of how to use his newfound powers, Pumpkin was completely non-hostile and possessed its own opinions of others due to Steven having full knowledge of the ability and thus control over it, and the Plant Stevens were reminiscent of Watermelon Stevens, pantomiming Steven's frantic and rapidly deteriorating mental state. Steven also possesses the ability to transfer his mind into plants he brings to life.

Pebble Animation: Steven possesses the ability to bring inanimate pebbles into living Pebbles.

Empathic Telepathy: Steven is able to sense things based on their emotional state. Steven can communicate with Gems through his dreams. This ability has primarily come to light while other beings are under emotional turmoil. Steven can also enter the dreams of other humans, but also that repeated use of this power can physically exhaust him, as sleeping in this state seems to provide no restful benefit that would otherwise be gained from typical sleep.

Mind Link: Steven is able to link his mind with another being allowing him to feel the target's emotions and see the world through their eyes. When Steven sleeps, his dream will be whatever the target is looking at. Steven does not have to willingly link minds with a person in order for this power to work.

Mind Transfer: Steven is able to transfer his consciousness into another living being he has a connection with while his own body is asleep. The true mind of the host body lays dormant while he is in control of it. Steven can also possess another person, though this requires both him and the person he is transferring minds with to be asleep. This ability is strong enough to reach from Homeworld to Earth, which is likely many lightyears away.

Psychometry/Retrocognition: Steven can relive moments experienced by his mother Pink Diamond, either as an observer or as Pink Diamond herself. This has only occurred when he is sleeping somewhere of great significance to his mother. When fused, the subjects of these memories can appear as amalgamations of figures both components consider to be similar.

Astral Projection: Steven, when unconscious, is able to enter an astral dimension while his body remains comatose. While in this state, he cannot interact or communicate with anyone in the physical world unless he phases through them. While in this astral dimension Steven is able to project a powerful pink aura, something he used to convince the other Diamonds that he was truly Pink Diamond reincarnated.

Electrical Interference: When under extreme mental or emotional stress Steven passively projects his subconscious onto devices such as televisions and cell phones. This ability appears to originate from his telepathy interfering with nearby radio signals.

Speed of Descent Regulation: Steven, like Rose, can levitate his body and even manipulate its gravity based on his emotions. When he thinks happy thoughts, he floats slowly to the ground, while when he is sad or angry, he descends much quicker. While floating slowly, anything he touches will also float just as slowly, no matter how large. This also allows him to jump higher than normal, having to be able to jump up to the temple's face and even above the clouds.

Pink Steven: In "Change Your Mind", it is revealed that if Steven's gemstone is removed, it will create a pink hologram that resembles Steven rather than regenerating into Pink Diamond. It'll then walk towards Steven and refuse with him. Sadly, Steven will be weak as long as the hologram exists. This hologram is much more powerful than Steven himself, cracking the floor of White Diamond's Warship and knocking her and all the controlled gems back with a shout, and easily deflecting White Diamond's power with his shield.

Pink State: According to Dr. Priyanka Maheswaran, because Steven experienced a great deal of physical and emotional trauma from his numerous adventures and ordeals during his childhood, it affected his body's ability to respond to minor stress normally. As a result, Steven's body began reacting to new stress as if he was in a life-or-death situation. This response manifested as a transformation known as Pink State. In this state, Steven's body (except his clothes) glows pink, and his strength, speed, and destructive energy output became tremendous, and several of his abilities evolve in potency and function. However, Steven has little to no control over this state, entering it automatically when angry or when he experiences anxiety, which puts him at risk of accidentally hurting people near him.

Super Speed: Steven gains the ability to enter a state of super speed in this state, causing him to leave pink afterimages behind him when he moves and allowing him to move so fast that everything in the world around him becomes nearly frozen, including things as fast as Gems.

Rage Scream A powerful shockwave reminiscent of the screams Pink produced during her temper tantrums. These screams are "carriers" for Energy Projection appearing as omnidirectional/spherical waves of pink energy with him at the center and destroying anything around him, even involuntarily. In Monster Form, Steven is still capable of omnidirectional screams, but also showed the ability to precisely direct them at a single target, and in that state are so powerful that they can repel the powers of the other Diamonds and stagger even the likes of White Diamond from a long range.Enhanced Bubbles In his Pink State Steven's bubbles change in form and function. He is able to create a large dome of interlocking diamonds which, when manifested, can carve through solid objects, slicing them apart at the impact. He is also able to create hexagonal forcefields that can act as both a defensive barrier and an offensive weapon. In this form, Steven can stack these barriers in order to enhance their offensive and defensive power, or make a wall with spikes for added offense.

True Flight: Upon learning to better control Pink State during his training with Jasper, Steven gained the ability to fly freely and unaided through the air while in this state, as seen during his second battle with Jasper at the end of their training.Size Shifting: A side effect of Steven's Pink State is uncontrollable but vastly enhanced shape-shifting which includes size-manipulation (up to the high-end of Large Size Type 0 or the low-end of Type 1 while still in human form). This size shifting seems to respond to both his conscious and subconscious self-perception and his psychological state. In Pink State, any and all major changes in his self-perception seem to result in alterations to his physical form. At its furthest extreme, this ability caused him to become Monster Steven, transforming into a monstrous Gem-Kaiju with fluctuating Large Size ranging from Type 1 to Type 2 due to him entering Berserk Mode after perceiving himself as a "monster."

Monster State: Due to all of his emotional grief, PTSD, and sense of purposelessness, Steven viewed himself as a monster and therefore transformed into one. In this state, he became a semi-rabid animal and much more powerful than before. He was able to quickly defeat Alexandrite, completely resist the powers of all three Diamonds, break free of Lapiz' water chains, and even overpower The Cluster. However, once all of the Crystal Gems, the Diamonds, Spinel, The Cluster, Greg, and Connie all got through to him through their words and love, this managed to snap Steven out of this state and turn him back to normal.

Steven shows incredible abilities. Why he shouldn't be part of the roster and in turn the avengers. It Because he a pacifist in nature and due to his self sacrifice nature took a toll on his mentality. And have to deal with purposelessness. Due to his PTSD which can lead him to become his pink state which can put him at risk of hurting people. Also let not forget his monster form which basically him becoming a uncontrollable Kaiju monster. So with the reasons explain Steven universe shouldn't join the avengers,let him not deal with anymore stress.

Head up the next character will be star butterfly.