An insight on his life....

Gero gathered the cells from the required fighters using a small mechanical fly that obtained their cells during certain battles, (they didn't have a clue).

Gero began to realise that Seru's project was going to take a very long time so he left the main computer to run it while he worked on other things.
So Seru grew peacefully in a test tube down in the basement lab for 24 years.

By the time Seru had matured into his larva stage and was ready to leave his tube, #17 and #18 had killed Dr. Gero. But being clever Gero had made a tape recording for Seru just incase anything happened to him so Seru would know his purpose. (destroy Gero's enemies hahahaha...)

After many years of searching and killing (eating), Seru finally found out that the androids had been destroyed by Trunks. So he hunted down Trunks (wanting to really hurt him) and caught him planning a trip back to the past.
(You can imagine Seru's eyes light up at the sight of the Time machine.)
Seru kills Trunks (hehe) and takes the time machine for a little spin. Seru had to de-evolve into an egg because he was too big to fit into the T.M.

Seru arrives in the past 4 years before the androids turn up. This gives him enough time to mature again. He hatches into his larva form and burrows into the ground where he waits and grows bigger.
By the time the androids come Seru is ready to surface and shed his skin becoming Imperfect again. Bulma, Maria Trunks and Gohan find the Time Machine, which was now old and rusted. They then find the shedded skin and notify the others.

Meanwhile Seru was causing more havoc in Ginger Town (he sucked the town dry).
He then moves on to Nikki town where he meets Piccolo. They have a showdown during which Piccolo tricks Seru into telling him who he is.
Maria Trunks, Krillin and Tien turn up making Seru out numbered so he decides to split by using a Solar flare attack. Now the Z fighters know about Seru and decide to hunt him down instead of the androids.

Seru moves from town to town absorbing the occupents while searching for the androids. The Z fighters stay hot on his trail trying to stop him from achieving perfection.

Finally Seru finds the androids fighting with Piccolo. After a bit of fighting he puts Piccolo out of commission and manages to absorb #17, evolving into his 2nd stage.

Seru then turns his attention towards #18 who is currently in shock after the death of her brother. Tien gives her the chance to escape by attacking Seru repeatedly with a tri beam.

Tien collapses from exhastion and Seru is about to destroy him when Goku teleports into the scene. He gathers up Piccolo and Tien and tells Seru that he isn't ready to fight him yet. Seru didn't care and launches an attack but Goku teleports away and Seru is left alone to proceed to hunt down #18.

#18 is hiding on island witth #16. Seru comes to a cluster of Islands one of which is the island #18 is hiding on. He begins to destroy each island one by one shouting at #18 to come out.
Then Vegita comes along with Maria Trunks not far behind him. They land on the one remaining island, which is where #18 and #16 are hiding.

Vegita and Seru start to fight but Seru begins to lose. Trunks arrives and Vegita lets him take over for awhile. Then Seru tells Vegita that if he is able to absorb #18 he'd be Perfect and a challenge. Vegita thinks this over at which point #18 and #16 are discovered.
Vegita decides to let Seru absorb #18 but Trunks has other things in mind.

Vegita tries to attack Seru but he is too strong and he gets his ass kicked. Seru is about to destroy him but Trunks steps in. Krillin takes Vegita to safety while Trunks fights Seru but in the end loses. Seru spares his life and tells him that he is going to hold a world martial arts tournament and they have 10 days to prepare.

Seru builds the ring and then broadcasts the tournament across the world via a television station, challenging any one to come fight him. He also tells everyone that if he isn't beaten he will destroy the earth and he gives an example of his power by blowing up some mountains behind the studio

After 10 days the tournament begins. He fights the losers first who stood absolutely know chance. (some followers of Hercule) then Hercule steps into the ring showing off and thinking he's soooo good but is soon disposed of by Seru who simply flicks him into a nearby mountain.

After a long period of fighting and the destruction of the ring. Goku gives up realising he can't win. He tells Seru that there is someone stronger than him and it turns out to be Gohan. (this is when it all goes down hill for Seru nooooooooooooo).
Seru and Gohan begin fighting and Seru is still winning.

Seru wants to uncover Gohan's hidden powers so he makes seven replicas of himself or Seru Jrs. and tells them to kill all the Z fighters.

This upset Gohan but not as much as Seru stamping down on #16's head killing him while he was having a little heart to heart with Gohan. This was a really bad move by Seru because that set off Gohan's fuse who powered up to Super Saiyan 2 and kills all the Seru Jrs. (sniff)
Now Seru had no chance. Even when he powered up to his full power he couldn't beat Gohan because his muscles were too bulky so that made him slow moving. To make thing worse Gohan kicks Seru so hard that he spits out #18 making him change back to his 2nd stage.

Seru, now Knowing that he has no chance of winning, decides to activate the bomb inside of him so that he'll blow up the earth and all the Z-fighters with him. He inflates into a huge balloon and is ready to explode when Goku teleports infront of him Goku says his goodbyes to everyone and teleports himself and Seru to King Kai's planet where they explode killing everyone on the tiny planet and blowing it to pieces, saving the earth.

A particle of Seru's nucleus had survived the blast and that was all he needed to regenerate himself. He regenerates back to his ultimate perfect form and becomes extremly strong.

Once fully regenerated, Seru returns to earth using the instant translocation technique his cells learnt while he was regenerating. He attacks the unsuspecting
Z fighters, killing Trunks. Vegita goes phsyco over the death of his son and attacks Seru with everything he has but loses and is knocked out.

Seru is about to destroy Vegita when Gohan jumps in and takes the blast. Unfortunatily for him one of his arms gets badly injured and he now can't use it. But he does save Vegita.
After killing Goku, Trunks and putting Vegita out of commission. Seru begins to realise his power's true potential and announces his new plan... First the destruction of the earth then the whole universe.
Gohan is now wishing that he had destroyed Seru when he had the chance as Seru begins to power up for the final blow that would cause the earth's destruction.

Seru powers up his Kamehameha wave and Gohan realises it is all up to him now. He begins to power up a single handed Kamahameha wave with Goku helping telepathecally from the other world.

Both Kamehameha waves collide but Seru is still too powerful. Goku coaches Gohan on an Vegita wakes up. He surprises everyone especially Seru by attacking him with a final flash. This puts Seru off totally and Gohan uses this as a chance to strike. Seru wasn't ready for the sudden power increase Gohan puts in his attack and is sadly killed. (Nooooooooooooooooooooooooooooooooooooooooooooooo).

This isn't the last time that we see Seru. He's still in the after life and lets not foreget that there is a Seru in Trunks' timeline.
Trunks goes back to his time where he destroys androids #17 and #18. He is now living in peace helping to repair all the damage they had caused. He is also waiting for Seru to turn up in his time.
Trunks decides to go back to the past to tell the others that everything was okay in his time when Seru pays him a visit. (It seems times gone round in a circle). Trunks isn't going to let this Seru kill him and go back in time like the other Seru had. He fights him and kills him.

Back in the past Goku decided to stay dead because he attracts too much trouble. He travels, with King Kai who is also dead, to the Grand Kai's planet. He meets Pikkon and the South Kai. The Grand Kai tells them that Seru had teamed up with Freiza, King Cold and the Ginyu Force and they were trying to take over HFIL (Hell).
Goku and Pikkon go off to HFIL to sort Seru and the others out.

Seru throughs a guard towards some spikes but Goku comes along and saves him. Seru goes to attck Goku but is stopped by Pikkon who is extremly strong and fast. He throws Seru into the pool of blood along with the others. Then he creates a whirle wind by spinning around, throwing them all into the spikes.
Later we see them all locked in jail with Seru sitting cross-legged on a pile of mats.