After a few days of messing around at Capsule Corp. He went to Bulma. He told her how there was Saiyans who attacked and they got defeated. He told her to wait and then he quickly grabbed Nappa's space pod and brought it to her, she still liked technology and gizmos and stuff like that. So he just gifted her it and told her which buttons meant what, he was a pro at this stuff! He had his own space pod at one point after all.
After asking Bulma if she had a dragon radar. She got one out of her drawers and gave it to him. She had made 4 in total, just incase one broke or got lost. One of them was on Goku, if he hadn't lost it already. Now Celeron had one. And the other two stayed in the drawer.
Celeron thanked her, giving her a goodbye kiss and explaining to her how he may be gone for around 2 months. "Okay, I'm going now! Don't forget to tell the others too!"
Celeron then teleported to Wukong Hospital, where the plebs were. He saw that Korin, Yajirobe and Mr Popo were also there, Popo was talking about a Namekian spaceship or something. 'Oh right, I'll go to it instead of Bulma'.
"Mr Popo, I'll go to it and check if it works. My wife, Bulma, is from Capsule Corp and she would be able to fix it even if it's broken."
"Who are you, may I ask?"
"Celeron. Their friend." He said pointing at the plebs in hospital beds.
After Krillin and Goku confirmed it. Celeron went with Mr Popo on his magic carpet. All the way to the valley where the Namekian spaceship was. After a while of walking, they finally reached it. Celeron walked up to it as he said, "Mr Popo, how do we open it?"
Celeron already knew but if he just said it, he would definitely seem suspicious. Mr Popo then stood underneath the spaceship next to Celeron as he said, "Piccolo."
After they got into the spaceship and tested it out by using voice commands to get back and from Jupiter, Celeron grabbed the spaceship and took it to Capsule Corp for reconstruction.
After telling Dr Brief about the reconstruction, he went to Gohan and Krillin, who just got discharged from the hospital, and told them that they both should get ready for Namek in 5 days as the spaceship would be fixed by then.
After all of the Namek 'preparation' was ready. Celeron went to Mr Popo on The Lookout. He wanted to learn Kai Kai! That was basically teleportation but without the need of an energy signature, there was no limitations that he knew of! Well apart from not being able to teleport out of the Evil Containment Wave.
Celeron was in front of Mr Popo (who magically travelled from the valley to the Lookout in an extremely short amount of time)now as he said, "Mr Popo, can you show me your instantaneous movement? I want to analyse it."
"Huh? You may." He said before teleporting backwards.
Celeron watched carefully and then after a few seconds, he teleported all around the Lookout.
"You're quite talented. Just like Korin said."
Celeron just thanked him as he went off on his way. He wasn't going to train his Ki or strength. He was going to train his techniques! He was already plenty strong, well at least he thinks he is.
Celeron flew to a wasteland. He stood in the middle of a few rock mountains. For today he was going to train his Kai Kai to be more accurate in its teleporting. He started off by teleporting on top of one mountain and to the next and the next and the next. In a few minutes, his short range teleportation was literally perfect! He could teleport more than a few kilometres away into the exact position he wanted! Then he started to teleport from West City to East City! He didn't really care if people saw him, they'd seen aliens and stuff anyway. Who cares if they saw a person teleporting, right?
Anyway, after around 2 hours, he had perfected his mediumish-range teleportation. He started to teleport from his home planet to Earth again and again. It was really inaccurate. At the start, he was missing the point he wanted to teleport by hundreds of meters. But by the end of the day, he was able to teleport from planet to planet only missing his destination by around a meter. It wasn't perfect, but to fix the long-range teleporting all he had to do was put his fingers to his forehead anyway. He had trained his Kai Kai, since against people who specialise in speed, he may not have the time to put his fingers up to his forehead. Plus, Instant Transmission uses Ki (although a tiny amount) and Kai Kai doesn't!
Celeron used Kai Kai to teleport back to Bulma's room as he fell asleep, his wives joining him later.
After Celeron woke up the next day, he ate his usual breakfast, which didn't even fit on the table. After finishing his breakfast, he showered, brushed his teeth and all that stuff, before teleporting to the same wasteland he was in yesterday. Today, he was going to train his Celery Charge! It would only improve in time by fractions of a second. But even that could make a huge difference in a battle where people were going at speeds so fast that you couldn't even see them with your eyes anymore.
And so, it was standard training for this technique. All he did was just waste his Ki and go from planet to planet at his highest speed to waste his stamina, then use Celery Charge to instantly refill. He did this again and again. The mental exhaustion was unbelievable by the end of the day. Imagine getting completely drained so you could barely move and then getting your stamina back instantly, before getting completely drained again. Repeating this for the whole day...
After Celeron woke up the next day and did his daily routine. He went to the wasteland to train another technique. This time, it was going to be: Celery Sword! This was one of his favourites. Don't get him wrong, he wasn't a psychopath, but he just loved the feeling of slicing through things without resistance. Like rocks and trees. Bodies? Not so much.
Celeron couldn't train this much. Well apart from manipulating the shape into different weapons, and the accuracy of his projectiles. But his accuracy was already pretty good, he had trained in martial arts after all, giving him good physical coordination skills. After manipulating the shape of the sword and getting comfortable with a lot of the shapes, he found the one he liked best. It had a tiny different design though. It started off dark gray on the edges and went to pitch black with little white stars randomly dotted everywhere. It looked so badass! Plus, it even shot out either white or black mini-swords that exploded on contact!
(Search 'Violent Fierce God Slicer' on Google Images, and its the first one. Except Celeron's goes from dark gray to pitch black and has little white stars dotted everywhere. Like the sky at night.)
Celeron woke up the next day, ready to train another technique. He teleported to the wasteland as always and was about to think of a new technique to train. When he realised that he couldn't! Celery Cannon was pretty hard to train, he would probably blow up a bunch of planets. And Kaioken, he had trained that a few days ago. Instant Transmission wasn't really needed anymore too! He realised that he didn't have many techniques. Well he did, but most of them didn't have a name. Like the finger beam he did to blow up the moon a while back, he just labelled it as a normal Ki attack.
And so! The solution was - to make a new technique!
Anyway! He had a basic idea. He was going to create an ultimate attack! Like the Spirit Bomb! Except his wouldn't take like five thousand years to charge up. It was going to basically be two huge balls of Ki that would be thrown forward and stay in mid-air. They would automatically absorb Ki from the enemies and the surroundings! He had discovered this when his Ki was leaking. He didn't fully understand it yet, but when there is a place with no Ki, it would 'absorb' Ki. It's like a funnel? Anyway, forgetting the technicalities, the huge ball of Ki would absorb a crap ton of Ki and then Celeron would be able to absorb it to use one super duper huge move!
In summary, It was basically a move that absorbed Ki from everywhere, including the enemies, to empower one final attack! However the attack would take half of his whole Ki in total!
He couldn't really practice this move though... but he was able to use it. He tried a mini version of the move using a fraction of a percent of his total Ki. Two baseball-sized balls of Ki were in hands and joined up in the air to create a beachball-sized ball of Ki. It quickly absorbed Ki from everywhere, growing ten times bigger than it was before. It then suddenly became more concentrated until it was ping pong ball-sized and then it travelled into Celeron's chest.
Instantly, Celeron was encased in a light gray aura that turned darker and darker towards the edges, until it was black. Celeron felt empowered, he could do a normal punch but that would be a waste! He could move around in this empowered state, but he would still have his normal speed. Celeron just tapped the ground with barely any power behind it, creating tiny cracks on the ground around his finger. The aura was only used up if Celeron thought of it as an attack. Celeron didn't know why that happened, but he was pretty happy. So the tap didn't get empowered if he didn't want it to.
This time, Celeron tapped the ground again with the same amount of more power, thinking of it as an attack. The ground cracked much more this time. After the timy bit of dust cleared up, Celeron was completely shocked. What the hell was that?! That's a pretty overpowered ultimate attack! Or maybe he was just that strong? He didn't really have an estimate of his strength anyway.
Celeron thought for a moment before thinking,
"I'm going to name my ultimate attack - Celery Absorption!"