Gram

Unlock
Wolf of Nobina is a special boss that replaces the newbie ground boss if your party items includes a single runestone. It is tougher than a D3-10 boss. Defeating it for the first time awards you with Gram which is a unique named Tier 4 weapon which also starts out as SSS+20 (20). Defeating it multiple times provides no additional rewards.

Upgrading
Currently you cannot upgrade Gram, however with future Patreon Bosses added into the game, your Gram will be upgraded each new Patreon Boss you defeat.

Wolf of Nobina
You can fight this battle if you take 1 Runestone with you to the Newbie Ground and fight 6 rooms. Winning this fight will give you Gram.

This boss has an incredibly high amount of speed and can quickly overwhelm your team if you aren't prepared. A team with an average dl of 160-170 should be fine here as long as you have Hourglass and Elephant in the team. If you do not have these pets or would rather fight without them, you could need a team of dl 200+.

Since the boss has so much speed, it is recommended that you utilize speed gear/gems to minimize the bonus damage it will be inflicting. Since speed damage cannot be reduced by defense, this is your best option if you are having trouble surviving the fight.

Fawn / Wisps
You can fight this battle if you take 2 Runestones and only 5 party members with you to the Newbie Ground and reach the boss room. This fight can only happen after you have defeated Nobina previously and received Gram.

The goal in this fight is to heal Fawn to 4 million hp. The percent based heal power of your supporters is disabled in this fight. The Wisps do a lot of damage so your whole front row needs very good defense, and because the percent based heal power is disabled, water gems on your equip are not very useful. The back row supporters should go for full attack and hope they don't get attacked often.

A good team in this battle would be 2 defenders and 3 supporters. Neutral pets are at an advantage and hourglass helps to keep your supporters on 3 actions because the enemies will slow your pets down, potentially halving your speed. Both defenders want to have at least 4000 defense with all elements positive and hourglass, in the front row, wants to have more than 1000 defense with all elements positive. All pets should be higher than level 200/55 with 150k+ growth or you will surely lose. This implies that you use maxed T3 equip. With T4 equip it would be easier but getting T4 equip is still very costly.

Best Team Composition
Front row: Dog, Anything (defender, maxed titanium equip with earth gems), Hourglass (supporter, Titanium Armor with earth gem, Inferno Sword + Inferno Gloves with fire gem)

Back row: Any supporter specialists (supporter, one supporter Gram with fire gem, all other equip inferno with fire gem)

Winning this fight will upgrade Gram to SSS +22 (22). This will increase the attack to 79, all elements to 90 and the extra exp gained to 22%.