With the release of ASA Aberration, WildCard released an update making Reaper King baby levels based on a combination of player, mother and XP levels. I have worked out a rough formula for level distribution.

Reaper Queen Level + ( Player Level ÷ ( 155 ÷ Bonus Levels ) )

For example: A level 130 Queen, 91 player and 75 bonus Levels comes out to. (Current max attainable player level is 155, this may change with future expansions)

155 ÷ 75 = 2.0666~

91 ÷ 2.0666 = 44.046

130 + 44 ( rounded ) = Reaper King Level 174

Thanks to contributions of other tips, here is what I found useful:

1. You can gain bonus level XP while mounted. You do not need to run on foot to kill stuff while impregnated

2. Once the baby hatches and eats your body or dino body (if you use a pheromone), you can claim the baby then cryo it to prevent it from continuing to run. (This may be a bug)

Pressing R1 whilst riding any reaper variant on PS4 makes the reaper do a roar.

don’t use the blood extraction syringe while pregnant it will remove the pregnancyy!!

So I will make this as simple as I possibly can so if you want one of these bad boys for one of your maps and you play single player then go to gen 2 now go to the Rockwell infected part of the map and then go to rockwells in are to find the cave area it’s in the middle part of the infected area so you go in to the boss terminal and look for a reaper queen they are bigger than the kings and have different tails so once you have found one bring it into the acid pool under the boss terminal the acid goes away and comes back every 2 minutes I think so then scan the queen with hlna and watch until it gets to 2k health then you have to lead it out of the acid pool and then it will do a sniff animation and then pick you up you will be at one health after it impregnates you so be careful leaving rockwells innards and then when the time comes make a box so the baby reaper can’t escape after you give birth if you want it to be a baby reaper immediately then cryopod it if you have one and want too welp there you go sorry it was so long ;)

Spend hours finding high level queen.

Get pregnant.

Give birth in base with walls as high as a behemoth gate.

Lose baby magically.

Thanks ark.

It is the second strongest Reaper ingame. Only thing being better is the Alpha Surface Reaper. Getting impregnated by a queen lvl 150 and getting all 75 lvls possible for it gives you anreaper baby born with 15-20k HP which after imprint almost 30k. Dmg gets over 300% and after imprint close to 400%. Lvled can be 40k HP and over 600% if not 700% easily. Its a beast, can charge jump like a crab, take it down there to the drake nests and you can farm eggs for days. But be aware that light makes him weaker aka he takes more dmg and deals less.

6/18/2020. You can still transfer pregnant to genesis. You can still weigh it down with meat. Dont believe the other posts

I lost my megalosaurus named Sleep Demon while trying to tame one of these guys

If you trap the reaper queen on foundations it can’t burry away after it impregnates you so the rest of your tribe can all get pregnant off one queen. Plus you can kill it once your done for some free levels on the baby <3

As of October 2020, you can transfer between servers without losing the baby. If you go to Crystal isles, you'll still have the baby but the timer will stop and will go back to normal once you travel back.

Drop everything, encumber yourself with food. Let the baby kill you, and you won't need to worry about watching it for all least a day. The 8 hour baby time means NOTHING

Accidentally discovered that they can float on water and don't sink. Idk if everyone already knows this.

This thing is the best PVE creature hands down, people like to think because it doesn't have a saddle, it must not be that good, however they fail to realize just how strong a reaper's natural armor is. By itself the reaper king resists 70% percent of all damage. This increases to about 83% with the full imprint buff. That is better than most asc. saddles. Also like the giga, a reaper gains more health from imprinting than most creatures. Example, a 150 reaper embrio plus the 75 levels typically comes out with around 10k to 14k health but easily eclipses 20k with full imprint alone. Their base damage is 75, which is higher than the rex's 55 making them no pushover with dps either. The spin attack, while doing less damage than the bite, ignores armor. And that's not even mentioning a reapers insane mobility. They can jump insanely high, take little to no fall damage from any height,

and sprint fast with minimal stamina drain.

The Reaper king, a Jack of all Trades, Master of All.

I know there's already like 1,000 of these tips but here's another with some extra info that I really wish I knew earlier! Keep in mind I still play ASE.

So first you need a light pet and a hazmat suit, basic stuff I won't get into. Find a high level reaper queen, I like to search specifically around the edge of the radiation zone so I can kite it into non-irradiated blue zone and wear better armor, then make a trap nearby (I highly recommend captain fatdog's/at least using double doors, and making sure that all the foundations are all decently above the ground).

Next, you're gonna need to go find the reaper queen again and kite her into the trap, then damage her until she's at less than 2,000HP, I recommend turning off your light pet (can be done through emotes in the whistle wheel!!) to do less damage when she's really low to reduce the chance of accidentally killing her. Then she'll glow pink and you can stand somewhat close, next to your PASSIVE tame so you can be climb back on when she's done. When she unaggroes to the trap, if you're standing in the sweet spot where she can't attack but she can still aggro to you, she'll crouch down with the little spines on her head twitching (If she doesn't do this, you're probably about to get knocked out, climb back on your tame), pick you up and impregnate you.

If you're doing this on a server with high growth/gestation rates, you can be impregnated multiple times with a box nearby to get multiple reapers with slightly different stats. If the queen gets out while you're leveling up, you can pretty easily trap her again if you chose a flat area. I managed to get one reaper with 24 melee and another with 30, plus 1 reaper with 35 health and another with 39. (For ASA you'll probably get much better stats since the speed stat was removed.) You can also drag out any friends or tribemates if you're on a server with lower gestation rates.

For the baby, I find that a 1x1 box works fine. If you have the Dino Storage mod/The ASA equivalent you can use the soul gun to easily pick up the baby, or fill your inventory with cooked meat and let it kill you (better on lower rate servers/officials).

Lure a Reaper Queen into a metal trap WITH A COVERED FLOOR SO IT CANNOT ESCAPE AFTERWARDS, that way multiple people can get pregnant from 1 good Queen. These other beach noob comments forget that detail. Using glowpets to weaken her, damage her until she reaches 2k hp, preferably with a Megalo or Reaper, but Drakes work too. Turn the lights off and she'll glow pink, showing she's ready. Now dismount and stay just out of reach until she leans forward, at which point she'll try to pick you up and BAM you're pregnant. There's a Drake trick that works without dismounting, look it up. Use the next 12 hours to trap more Queens, finishing them off with a shotgun to get the most exp for the baby. Once time is up, encumber yourself with meat in a small room and let the baby kill you when it hatches. It'll take all the meat regardless of weight and you won't have to handfeed it at all, pheromones are worthless lmao. Use a crab to pick the baby up and it'll stay there until it hits juvenile.

Maewing DOES feed baby reapers,

Hope your death is quick and painless

Blood wyvern attacks kill the baby reaper that youre impregnated with... found that out the hard way when my trade deal was attacked by a guy on blood wyvern..................

Make sure you have some heals on you when the reaper queen impregnates you!!

I just looked at this things info n if u hit head shots you could knock it out with 20 tranqs prim cross bow why don’t people just knock it out and lower health while it’s asleep